https://www.youtube.com/watch?v=tWlKKC0V-_M&ab_channel=gm4dhjnobody interested then
On 06/02/2023 12:41, Jim gm4dhj ... wrote:
https://www.youtube.com/watch?v=tWlKKC0V-_M&ab_channel=gm4dhjnobody interested then
On Wed, 8 Feb 2023 19:41:13 +0000, jim.gm4dhj <[email protected]> wrote:
On 06/02/2023 12:41, Jim gm4dhj ... wrote:
https://www.youtube.com/watch?v=tWlKKC0V-_M&ab_channel=gm4dhjnobody interested then
I watched it. Did I miss something?
https://www.youtube.com/watch?v=tWlKKC0V-_M&ab_channel=gm4dhj
On Mon, 6 Feb 2023 12:41:54 +0000, "Jim gm4dhj ..." <[email protected]> wrote:
https://www.youtube.com/watch?v=tWlKKC0V-_M&ab_channel=gm4dhj
I'm a bit late to reply to this, but....
I bought an FT0101E just over 40 years ago. My first proper radio, it
was. Fuciking *loved it* so much I bought another one about 25yrs
later and was lucky enough to find an 'as new' specimen with the
factory inspection tag still on the handle. I really can't fault these
sets. I'm just surprised they don't fetch more on Ebay as they're top
notch gear IMHO. One day, I want to be buried with mine. I plan to
have a specially adapted coffin to accommodate us both.
On 02/04/2023 17:58, Cursitor Doom wrote:
On Mon, 6 Feb 2023 12:41:54 +0000, "Jim gm4dhj ..."
<[email protected]> wrote:
https://www.youtube.com/watch?v=tWlKKC0V-_M&ab_channel=gm4dhjI'm a bit late to reply to this, but....
I bought an FT0101E just over 40 years ago. My first proper radio,
it
was. Fuciking *loved it* so much I bought another one about 25yrs
later and was lucky enough to find an 'as new' specimen with the
factory inspection tag still on the handle. I really can't fault these
sets. I'm just surprised they don't fetch more on Ebay as they're top
notch gear IMHO. One day, I want to be buried with mine. I plan to
have a specially adapted coffin to accommodate us both.
You are the ghost of G3LLL AICMFP.
In message <[email protected]>, A. non Eyemouse <[email protected]d> writes
On 02/04/2023 17:58, Cursitor Doom wrote:
On Mon, 6 Feb 2023 12:41:54 +0000, "Jim gm4dhj ..."
<[email protected]> wrote:
https://www.youtube.com/watch?v=tWlKKC0V-_M&ab_channel=gm4dhjI'm a bit late to reply to this, but....
I bought an FT0101E just over 40 years ago. My first proper radio, it
was. Fuciking *loved it* so much I bought another one about 25yrs
later and was lucky enough to find an 'as new' specimen with the
factory inspection tag still on the handle. I really can't fault these
sets. I'm just surprised they don't fetch more on Ebay as they're top
notch gear IMHO. One day, I want to be buried with mine. I plan to
have a specially adapted coffin to accommodate us both.
You are the ghost of G3LLL AICMFP.
I bought the top-band mod kit for my FT560 from LLL and a replacement
mains transformer after it had a visit from the smoke fairy.
Brian GM4DIJ
On 06/04/2023 06:38, brian wrote:
In message <[email protected]>, A. non EyemouseI bought a LLL clipper FOR MY mK1 WITHOUT TOP BAND with a free 444T the
<[email protected]d> writes
On 02/04/2023 17:58, Cursitor Doom wrote:
On Mon, 6 Feb 2023 12:41:54 +0000, "Jim gm4dhj ..."
<[email protected]> wrote:
https://www.youtube.com/watch?v=tWlKKC0V-_M&ab_channel=gm4dhjI'm a bit late to reply to this, but....
I bought an FT0101E just over 40 years ago. My first proper radio, it >>>> was. Fuciking *loved it* so much I bought another one about 25yrs
later and was lucky enough to find an 'as new' specimen with the
factory inspection tag still on the handle. I really can't fault these >>>> sets. I'm just surprised they don't fetch more on Ebay as they're top
notch gear IMHO. One day, I want to be buried with mine. I plan to
have a specially adapted coffin to accommodate us both.
You are the ghost of G3LLL AICMFP.
I bought the top-band mod kit for my FT560 from LLL and a replacement
mains transformer after it had a visit from the smoke fairy.
Brian GM4DIJ
amp in which took off at the slightest sign of RF
In message <[email protected]>, A. non Eyemouse <[email protected]d> writes
On 02/04/2023 17:58, Cursitor Doom wrote:
On Mon, 6 Feb 2023 12:41:54 +0000, "Jim gm4dhj ..."
<[email protected]> wrote:
https://www.youtube.com/watch?v=tWlKKC0V-_M&ab_channel=gm4dhjI'm a bit late to reply to this, but....
I bought an FT0101E just over 40 years ago. My first proper radio, it
was. Fuciking *loved it* so much I bought another one about 25yrs
later and was lucky enough to find an 'as new' specimen with the
factory inspection tag still on the handle. I really can't fault these
sets. I'm just surprised they don't fetch more on Ebay as they're top
notch gear IMHO. One day, I want to be buried with mine. I plan to
have a specially adapted coffin to accommodate us both.
You are the ghost of G3LLL AICMFP.
I bought the top-band mod kit for my FT560 from LLL and a replacement
mains transformer after it had a visit from the smoke fairy.
Brian GM4DIJ
On 06/04/2023 08:30, Jim gm4dhj ... wrote:sure did...it sure did
On 06/04/2023 06:38, brian wrote:
In message <[email protected]>, A. non EyemouseI bought a LLL clipper FOR MY mK1 WITHOUT TOP BAND with a free 444T
<[email protected]d> writes
On 02/04/2023 17:58, Cursitor Doom wrote:
On Mon, 6 Feb 2023 12:41:54 +0000, "Jim gm4dhj ..."
<[email protected]> wrote:
https://www.youtube.com/watch?v=tWlKKC0V-_M&ab_channel=gm4dhjI'm a bit late to reply to this, but....
I bought an FT0101E just over 40 years ago. My first proper radio, it >>>>> was. Fuciking *loved it* so much I bought another one about 25yrs
later and was lucky enough to find an 'as new' specimen with the
factory inspection tag still on the handle. I really can't fault these >>>>> sets. I'm just surprised they don't fetch more on Ebay as they're top >>>>> notch gear IMHO. One day, I want to be buried with mine. I plan to
have a specially adapted coffin to accommodate us both.
You are the ghost of G3LLL AICMFP.
I bought the top-band mod kit for my FT560 from LLL and a
replacement mains transformer after it had a visit from the smoke fairy. >>>
Brian GM4DIJ
the amp in which took off at the slightest sign of RF
Did yours have the 12v Option? Did it produce more power at 12v than a
modern Icom?
On 02/04/2023 17:58, Cursitor Doom wrote:
On Mon, 6 Feb 2023 12:41:54 +0000, "Jim gm4dhj ..."
<[email protected]> wrote:
https://www.youtube.com/watch?v=tWlKKC0V-_M&ab_channel=gm4dhj
I'm a bit late to reply to this, but....
I bought an FT0101E just over 40 years ago. My first proper radio, it
was. Fuciking *loved it* so much I bought another one about 25yrs
later and was lucky enough to find an 'as new' specimen with the
factory inspection tag still on the handle. I really can't fault these
sets. I'm just surprised they don't fetch more on Ebay as they're top
notch gear IMHO. One day, I want to be buried with mine. I plan to
have a specially adapted coffin to accommodate us both.
You are the ghost of G3LLL AICMFP.
On 06/04/2023 00:29, A. non Eyemouse wrote:
On 02/04/2023 17:58, Cursitor Doom wrote:is he deed ? ...
On Mon, 6 Feb 2023 12:41:54 +0000, "Jim gm4dhj ..."You are the ghost of G3LLL AICMFP.
<[email protected]> wrote:
https://www.youtube.com/watch?v=tWlKKC0V-_M&ab_channel=gm4dhj
I'm a bit late to reply to this, but....
I bought an FT0101E just over 40 years ago. My first proper radio, it
was. Fuciking *loved it* so much I bought another one about 25yrs
later and was lucky enough to find an 'as new' specimen with the
factory inspection tag still on the handle. I really can't fault these
sets. I'm just surprised they don't fetch more on Ebay as they're top
notch gear IMHO. One day, I want to be buried with mine. I plan to
have a specially adapted coffin to accommodate us both.
On 06/04/2023 06:38, brian wrote:
In message <[email protected]>, A. non Eyemouse >><[email protected]d> writes
On 02/04/2023 17:58, Cursitor Doom wrote:I� bought the top-band mod kit for my FT560 from LLL and a
On Mon, 6 Feb 2023 12:41:54 +0000, "Jim gm4dhj ..."
<[email protected]> wrote:
https://www.youtube.com/watch?v=tWlKKC0V-_M&ab_channel=gm4dhj�I'm a bit late to reply to this, but....
�I bought an FT0101E just over 40 years ago. My first proper radio, it >>>> was. Fuciking *loved it* so much I bought another one about 25yrs
later and was lucky enough to find an 'as new' specimen with the
factory inspection tag still on the handle. I really can't fault these >>>> sets. I'm just surprised they don't fetch more on Ebay as they're top
notch gear IMHO. One day, I want to be buried with mine. I plan to
have a specially adapted coffin to accommodate us both.
You are the ghost of G3LLL AICMFP.
replacement mains transformer after it had a visit from the smoke
fairy.
Brian GM4DIJ
I never owned one of those but I used one or two on Field Days. IIRC
the FT401B was the better one which had a CW filter. The Japanese knew
a thing or two about getting RF out of TV line output tubes. I wondered
if they were unable to get hold of 6146s in the early days?
You are the ghost of G3LLL AICMFP.
is he deed ? ...
In message <[email protected]>, A. non Eyemouse <[email protected]d> writescommon fault I wouldn't bother
On 06/04/2023 06:38, brian wrote:
In message <[email protected]>, A. non Eyemouse
<[email protected]d> writes
On 02/04/2023 17:58, Cursitor Doom wrote:I bought the top-band mod kit for my FT560 from LLL and a
On Mon, 6 Feb 2023 12:41:54 +0000, "Jim gm4dhj ..."
<[email protected]> wrote:
https://www.youtube.com/watch?v=tWlKKC0V-_M&ab_channel=gm4dhjI'm a bit late to reply to this, but....
I bought an FT0101E just over 40 years ago. My first proper radio, it >>>>> was. Fuciking *loved it* so much I bought another one about 25yrs
later and was lucky enough to find an 'as new' specimen with the
factory inspection tag still on the handle. I really can't fault these >>>>> sets. I'm just surprised they don't fetch more on Ebay as they're top >>>>> notch gear IMHO. One day, I want to be buried with mine. I plan to
have a specially adapted coffin to accommodate us both.
You are the ghost of G3LLL AICMFP.
replacement mains transformer after it had a visit from the smoke
fairy.
Brian GM4DIJ
I never owned one of those but I used one or two on Field Days. IIRC
the FT401B was the better one which had a CW filter. The Japanese knew
a thing or two about getting RF out of TV line output tubes. I
wondered if they were unable to get hold of 6146s in the early days?
I added the CW filter. It might have come from LLL as well. I also added
tx on 10MHz. I've still got it . The previous owner wanted to see it
again- I told him he could have it for free. If you tuned on full
carrier for too long the glass envelopes of the 6KD6s melted and sucked inwards.
I've an FT102 that uses 3 x 6146s . I need to refurbish it as the relays
have gummed up.
Brian GM4DIJ
On Thu, 6 Apr 2023 14:56:32 +0100
"jim.gm4dhj" <[email protected]> wrote:
You are the ghost of G3LLL AICMFP.is he deed ? ...
I think not, unlike G3LEQ of similar vintage who went SK just over 5
years ago.
Harry wrote his last column for Practically Witless about 2 years ago,
he has been retired for about 22 years now so definitely getting on a
bit.
On 06/04/2023 19:54, Brian Morrison wrote:
On Thu, 6 Apr 2023 14:56:32 +0100
"jim.gm4dhj" <[email protected]> wrote:
[...]
is he deed ? ...
I think not, unlike G3LEQ of similar vintage who went SK just over 5
years ago.
Harry wrote his last column for Practically Witless about 2 years
ago, he has been retired for about 22 years now so definitely
getting on a bit.
sold me a duff power supply at holdings Blackburn ...
On Fri, 7 Apr 2023 12:21:06 +0100
"Jim gm4dhj ..." <[email protected]> wrote:
On 06/04/2023 19:54, Brian Morrison wrote:
On Thu, 6 Apr 2023 14:56:32 +0100[...]
"jim.gm4dhj" <[email protected]> wrote:
sold me a duff power supply at holdings Blackburn ...is he deed ? ...
I think not, unlike G3LEQ of similar vintage who went SK just over 5
years ago.
Harry wrote his last column for Practically Witless about 2 years
ago, he has been retired for about 22 years now so definitely
getting on a bit.
Why does everyone hate you Jim?
On 07/04/2023 13:32, Brian Morrison wrote:
On Fri, 7 Apr 2023 12:21:06 +0100
"Jim gm4dhj ..." <[email protected]> wrote:
[...]On 06/04/2023 19:54, Brian Morrison wrote:
[...][...]
[...]
sold me a duff power supply at holdings Blackburn ...
Why does everyone hate you Jim?
don't know but the neg terminal was 12v positive couldn't use it with
earthed equipment.....
On Fri, 7 Apr 2023 17:34:27 +0100
"jim.gm4dhj" <[email protected]> wrote:
On 07/04/2023 13:32, Brian Morrison wrote:
On Fri, 7 Apr 2023 12:21:06 +0100[...]
"Jim gm4dhj ..." <[email protected]> wrote:
On 06/04/2023 19:54, Brian Morrison wrote:
[...][...]
[...]
don't know but the neg terminal was 12v positive couldn't use it withsold me a duff power supply at holdings Blackburn ...
Why does everyone hate you Jim?
earthed equipment.....
Designed for the old car earthing arrangements? My old TR7010 manual
had a section on that and using AC decoupling when on a positive earth chassis.
On Fri, 7 Apr 2023 17:34:27 +0100
"jim.gm4dhj" <[email protected]> wrote:
On 07/04/2023 13:32, Brian Morrison wrote:
On Fri, 7 Apr 2023 12:21:06 +0100[...]
"Jim gm4dhj ..." <[email protected]> wrote:
On 06/04/2023 19:54, Brian Morrison wrote:
[...][...]
[...]
don't know but the neg terminal was 12v positive couldn't use it withsold me a duff power supply at holdings Blackburn ...
Why does everyone hate you Jim?
earthed equipment.....
Designed for the old car earthing arrangements? My old TR7010 manual
had a section on that and using AC decoupling when on a positive earth chassis.
Designed for the old car earthing arrangements? My old TR7010 manual
had a section on that and using AC decoupling when on a positive
earth chassis.
I’m surprised there were many +ve earth cars around - at least to
justify them including such a note- when the TR7010 came out.
I recall in the mid 1960s, when my brother got his first car, he and
my father discussing +ve and -ve earth cars. It was normal then to
change to +ve earth in some cars, I recall my father explaining how
you you could change the polarity of the dynamo - assuming you
weren’t changing to an alternator which was the ‘new’ thing.
Perhaps +ve earth was still being used in the US?
On 09/04/2023 17:22, Brian Morrison wrote:I seem to remember wiring up my 19 set to the mini was it pos earth the dynomotor that is ????
On Sun, 9 Apr 2023 10:12:32 -0000 (UTC)my 63 mini and 62 sunbeam alpine were pos earth
Brian <[email protected]> wrote:
Designed for the old car earthing arrangements? My old TR7010 manual
had a section on that and using AC decoupling when on a positive
earth chassis.
I’m surprised there were many +ve earth cars around - at least to
justify them including such a note- when the TR7010 came out.
I regarded that section in the manual as an oddity, but I thought it
worth mentioning. Can't remember exactly when the 7010 first appeared,
I suspect it was about 1974-75 in Japan but maybe a year later in
Europe. Not sure if it was a Liner 2 copy but it could easily have been.
If memory serves the main aspect was about body-mounted antennas
needing AC coupling from the body back to the coax cable screen and
ensuring that the radio itself was not grounded to the body. Direct
connection of the power cable to the battery terminals, and if a very
dim memory is correct (I sold the radio in the late 80s) there were
some insulating washers supplied with the mounting bracket. I didn't
use the mobile mounting kit so sold it all on as supplied with the
bolts, nuts and washers still in the sealed bag.
I recall in the mid 1960s, when my brother got his first car, he and
my father discussing +ve and -ve earth cars. It was normal then to
change to +ve earth in some cars, I recall my father explaining how
you you could change the polarity of the dynamo - assuming you
weren’t changing to an alternator which was the ‘new’ thing.
We had a 1961 Ford Consul Classic, bought new by my father. It had a
dynamo but I'm pretty sure it was negative earth. I certainly remember
how the charge warning light was bright with the engine at idle in the
winter evenings. It also had an adjustable radiator blind, don't see
those any more.
Perhaps +ve earth was still being used in the US?
I am not sure if I've ever seen a positive earth car in the flesh
except maybe at car shows where I wasn't specifically looking for it.
On Sun, 9 Apr 2023 10:12:32 -0000 (UTC)
Brian <[email protected]> wrote:
Designed for the old car earthing arrangements? My old TR7010 manual
had a section on that and using AC decoupling when on a positive
earth chassis.
I’m surprised there were many +ve earth cars around - at least to
justify them including such a note- when the TR7010 came out.
I regarded that section in the manual as an oddity, but I thought it
worth mentioning. Can't remember exactly when the 7010 first appeared,
I suspect it was about 1974-75 in Japan but maybe a year later in
Europe. Not sure if it was a Liner 2 copy but it could easily have been.
If memory serves the main aspect was about body-mounted antennas
needing AC coupling from the body back to the coax cable screen and
ensuring that the radio itself was not grounded to the body. Direct connection of the power cable to the battery terminals, and if a very
dim memory is correct (I sold the radio in the late 80s) there were
some insulating washers supplied with the mounting bracket. I didn't
use the mobile mounting kit so sold it all on as supplied with the
bolts, nuts and washers still in the sealed bag.
I recall in the mid 1960s, when my brother got his first car, he and
my father discussing +ve and -ve earth cars. It was normal then to
change to +ve earth in some cars, I recall my father explaining how
you you could change the polarity of the dynamo - assuming you
weren’t changing to an alternator which was the ‘new’ thing.
We had a 1961 Ford Consul Classic, bought new by my father. It had a
dynamo but I'm pretty sure it was negative earth. I certainly remember
how the charge warning light was bright with the engine at idle in the
winter evenings. It also had an adjustable radiator blind, don't see
those any more.
Perhaps +ve earth was still being used in the US?
I am not sure if I've ever seen a positive earth car in the flesh
except maybe at car shows where I wasn't specifically looking for it.
On 09/04/2023 17:22, Brian Morrison wrote:
On Sun, 9 Apr 2023 10:12:32 -0000 (UTC)my 63 mini and 62 sunbeam alpine were pos earth
Brian <[email protected]> wrote:
I regarded that section in the manual as an oddity, but I thought itDesigned for the old car earthing arrangements? My old TR7010
manual
had a section on that and using AC decoupling when on a positive
earth chassis.
I’m surprised there were many +ve earth cars around - at least to
justify them including such a note- when the TR7010 came out.
worth mentioning. Can't remember exactly when the 7010 first appeared,
I suspect it was about 1974-75 in Japan but maybe a year later in
Europe. Not sure if it was a Liner 2 copy but it could easily have been.
If memory serves the main aspect was about body-mounted antennas
needing AC coupling from the body back to the coax cable screen and
ensuring that the radio itself was not grounded to the body. Direct
connection of the power cable to the battery terminals, and if a very
dim memory is correct (I sold the radio in the late 80s) there were
some insulating washers supplied with the mounting bracket. I didn't
use the mobile mounting kit so sold it all on as supplied with the
bolts, nuts and washers still in the sealed bag.
We had a 1961 Ford Consul Classic, bought new by my father. It had a
I recall in the mid 1960s, when my brother got his first car, he and
my father discussing +ve and -ve earth cars. It was normal then to
change to +ve earth in some cars, I recall my father explaining how
you you could change the polarity of the dynamo - assuming you
weren’t changing to an alternator which was the ‘new’ thing.
dynamo but I'm pretty sure it was negative earth. I certainly remember
how the charge warning light was bright with the engine at idle in the
winter evenings. It also had an adjustable radiator blind, don't see
those any more.
I am not sure if I've ever seen a positive earth car in the flesh
Perhaps +ve earth was still being used in the US?
except maybe at car shows where I wasn't specifically looking for it.
We had a 1961 Ford Consul Classic, bought new by my father. It had a
dynamo but I'm pretty sure it was negative earth. I certainly remember
how the charge warning light was bright with the engine at idle in the
winter evenings. It also had an adjustable radiator blind, don't see
those any more.
On Sun, 9 Apr 2023 10:12:32 -0000 (UTC)
Brian <[email protected]> wrote:
Designed for the old car earthing arrangements? My old TR7010 manual
had a section on that and using AC decoupling when on a positive
earth chassis.
I’m surprised there were many +ve earth cars around - at least to
justify them including such a note- when the TR7010 came out.
I regarded that section in the manual as an oddity, but I thought it
worth mentioning. Can't remember exactly when the 7010 first appeared,
I suspect it was about 1974-75 in Japan but maybe a year later in
Europe. Not sure if it was a Liner 2 copy but it could easily have been.
If memory serves the main aspect was about body-mounted antennas
needing AC coupling from the body back to the coax cable screen and
ensuring that the radio itself was not grounded to the body. Direct connection of the power cable to the battery terminals, and if a very
dim memory is correct (I sold the radio in the late 80s) there were
some insulating washers supplied with the mounting bracket. I didn't
use the mobile mounting kit so sold it all on as supplied with the
bolts, nuts and washers still in the sealed bag.
I recall in the mid 1960s, when my brother got his first car, he and
my father discussing +ve and -ve earth cars. It was normal then to
change to +ve earth in some cars, I recall my father explaining how
you you could change the polarity of the dynamo - assuming you
weren’t changing to an alternator which was the ‘new’ thing.
We had a 1961 Ford Consul Classic, bought new by my father. It had a
dynamo but I'm pretty sure it was negative earth. I certainly remember
how the charge warning light was bright with the engine at idle in the
winter evenings. It also had an adjustable radiator blind, don't see
those any more.
Perhaps +ve earth was still being used in the US?
I am not sure if I've ever seen a positive earth car in the flesh
except maybe at car shows where I wasn't specifically looking for it.
We had a 1961 Ford Consul Classic, bought new by my father. It had a
dynamo but I'm pretty sure it was negative earth. I certainly remember
how the charge warning light was bright with the engine at idle in the
winter evenings. It also had an adjustable radiator blind, don't see
those any more.
The TR7010 came out in about 1975 and at that time I had an Austin 1100
which was (originally) + earth, as were most BL cars around that were a
few years old.
I had converted mine to - earth because of the radio installation
problem, both amateur and commercial.
Interestingly Pye equipment of the era, Cambridges, Vanguards and the
like, were built with floating internal chassis so that they could be
used with either polarity earth.
Jeff
On 09/04/2023 17:22, Brian Morrison wrote:
On Sun, 9 Apr 2023 10:12:32 -0000 (UTC)my 63 mini and 62 sunbeam alpine were pos earth
Brian <[email protected]> wrote:
Designed for the old car earthing arrangements? My old TR7010 manual
had a section on that and using AC decoupling when on a positive
earth chassis.
I’m surprised there were many +ve earth cars around - at least to
justify them including such a note- when the TR7010 came out.
I regarded that section in the manual as an oddity, but I thought it
worth mentioning. Can't remember exactly when the 7010 first appeared,
I suspect it was about 1974-75 in Japan but maybe a year later in
Europe. Not sure if it was a Liner 2 copy but it could easily have been.
If memory serves the main aspect was about body-mounted antennas
needing AC coupling from the body back to the coax cable screen and
ensuring that the radio itself was not grounded to the body. Direct
connection of the power cable to the battery terminals, and if a very
dim memory is correct (I sold the radio in the late 80s) there were
some insulating washers supplied with the mounting bracket. I didn't
use the mobile mounting kit so sold it all on as supplied with the
bolts, nuts and washers still in the sealed bag.
I recall in the mid 1960s, when my brother got his first car, he and
my father discussing +ve and -ve earth cars. It was normal then to
change to +ve earth in some cars, I recall my father explaining how
you you could change the polarity of the dynamo - assuming you
weren’t changing to an alternator which was the ‘new’ thing.
We had a 1961 Ford Consul Classic, bought new by my father. It had a
dynamo but I'm pretty sure it was negative earth. I certainly remember
how the charge warning light was bright with the engine at idle in the
winter evenings. It also had an adjustable radiator blind, don't see
those any more.
Perhaps +ve earth was still being used in the US?
I am not sure if I've ever seen a positive earth car in the flesh
except maybe at car shows where I wasn't specifically looking for it.
Brian Morrison <[email protected]> wrote:
On Sun, 9 Apr 2023 10:12:32 -0000 (UTC)
Brian <[email protected]> wrote:
Designed for the old car earthing arrangements? My old TR7010 manual
had a section on that and using AC decoupling when on a positive
earth chassis.
I’m surprised there were many +ve earth cars around - at least to
justify them including such a note- when the TR7010 came out.
I regarded that section in the manual as an oddity, but I thought it
worth mentioning. Can't remember exactly when the 7010 first appeared,
I suspect it was about 1974-75 in Japan but maybe a year later in
Europe. Not sure if it was a Liner 2 copy but it could easily have been.
I don’t doubt it was/ is there but I suspect it was for another reason.
If memory serves the main aspect was about body-mounted antennas
needing AC coupling from the body back to the coax cable screen and
ensuring that the radio itself was not grounded to the body. Direct
connection of the power cable to the battery terminals, and if a very
dim memory is correct (I sold the radio in the late 80s) there were
some insulating washers supplied with the mounting bracket. I didn't
use the mobile mounting kit so sold it all on as supplied with the
bolts, nuts and washers still in the sealed bag.
The manuals used to be more careful about grounding in case the engine
earth strap went bad. *That is why there are - or were- fuses in both
leads. Otherwise, your radio cabling could end up carrying the starter current if you connected direct to both battery terminals.
* Installation instructions recommended connecting direct to the battery to reduce noise- mainly from ignition and the alternator back then. Cars didn’t tend to be filled with electronic gubbins.
Now, best practice is to only have one lead to the battery negative and connect things like amateur radio kit to the point where the earth strap joins the chassis.
True, this can lead to some noise but if the earth strap is ‘chunky’ and short to reduce the Z, this should be minimal, even in modern cars were
there can be more noise due to other electronics etc. I’ve done this for years and never had a noise problem.
I recall in the mid 1960s, when my brother got his first car, he and
my father discussing +ve and -ve earth cars. It was normal then to
change to +ve earth in some cars, I recall my father explaining how
you you could change the polarity of the dynamo - assuming you
weren’t changing to an alternator which was the ‘new’ thing.
We had a 1961 Ford Consul Classic, bought new by my father. It had a
dynamo but I'm pretty sure it was negative earth. I certainly remember
how the charge warning light was bright with the engine at idle in the
winter evenings. It also had an adjustable radiator blind, don't see
those any more.
Perhaps +ve earth was still being used in the US?
I am not sure if I've ever seen a positive earth car in the flesh
except maybe at car shows where I wasn't specifically looking for it.
I think I’ve seen the old really odd classic ( pre war) one - the kind that has electro-mechanical voltage regulators during a classic/ fun car run I attend most years. Not exactly the kind of thing you stick a radio in 😀
On 10/04/2023 13:31, Brian wrote:
Brian Morrison <[email protected]> wrote:THINK MY '66 MUSTANG HAD THOSE NEVER BOTHERED REPLACING THEM
On Sun, 9 Apr 2023 10:12:32 -0000 (UTC)I don’t doubt it was/ is there but I suspect it was for another
Brian <[email protected]> wrote:
Designed for the old car earthing arrangements? My old TR7010 manual >>>>> had a section on that and using AC decoupling when on a positive
earth chassis.
I’m surprised there were many +ve earth cars around - at least to
justify them including such a note- when the TR7010 came out.
I regarded that section in the manual as an oddity, but I thought it
worth mentioning. Can't remember exactly when the 7010 first appeared,
I suspect it was about 1974-75 in Japan but maybe a year later in
Europe. Not sure if it was a Liner 2 copy but it could easily have been. >>>
reason.
If memory serves the main aspect was about body-mounted antennasThe manuals used to be more careful about grounding in case the
needing AC coupling from the body back to the coax cable screen and
ensuring that the radio itself was not grounded to the body. Direct
connection of the power cable to the battery terminals, and if a very
dim memory is correct (I sold the radio in the late 80s) there were
some insulating washers supplied with the mounting bracket. I didn't
use the mobile mounting kit so sold it all on as supplied with the
bolts, nuts and washers still in the sealed bag.
engine
earth strap went bad. *That is why there are - or were- fuses in both
leads. Otherwise, your radio cabling could end up carrying the starter
current if you connected direct to both battery terminals.
* Installation instructions recommended connecting direct to the
battery to
reduce noise- mainly from ignition and the alternator back then. Cars
didn’t tend to be filled with electronic gubbins.
Now, best practice is to only have one lead to the battery negative
and
connect things like amateur radio kit to the point where the earth strap
joins the chassis.
True, this can lead to some noise but if the earth strap is
‘chunky’ and
short to reduce the Z, this should be minimal, even in modern cars were
there can be more noise due to other electronics etc. I’ve done this for >> years and never had a noise problem.
I think I’ve seen the old really odd classic ( pre war) one - the
I recall in the mid 1960s, when my brother got his first car, he and
my father discussing +ve and -ve earth cars. It was normal then to
change to +ve earth in some cars, I recall my father explaining how
you you could change the polarity of the dynamo - assuming you
weren’t changing to an alternator which was the ‘new’ thing.
We had a 1961 Ford Consul Classic, bought new by my father. It had a
dynamo but I'm pretty sure it was negative earth. I certainly remember
how the charge warning light was bright with the engine at idle in the
winter evenings. It also had an adjustable radiator blind, don't see
those any more.
Perhaps +ve earth was still being used in the US?
I am not sure if I've ever seen a positive earth car in the flesh
except maybe at car shows where I wasn't specifically looking for it.
kind that
has electro-mechanical voltage regulators during a classic/ fun car run I >> attend most years. Not exactly the kind of thing you stick a radio in ?
Same (of course) with my 1954 Ford Prefect. No trouble with 160 and 80m mobile - although I might possibly have added a suitable capacitor
somewhere.
On Tue, 11 Apr 2023 15:28:13 +0100, Ian Jackson ><[email protected]> wrote:
Same (of course) with my 1954 Ford Prefect. No trouble with 160 and 80m
mobile - although I might possibly have added a suitable capacitor
somewhere.
My mum had a Ford Popular of that vintage. When I was
visiting a local Merkin SWL, later G5AFA, he would hera the QRM
from mum's ignition and tell me my mum had arrived.
Interestingly Pye equipment of the era, Cambridges, Vanguards and the
like, were built with floating internal chassis so that they could be
used with either polarity earth.
The manuals used to be more careful about grounding in case the engine
earth strap went bad. *That is why there are - or were- fuses in both
leads. Otherwise, your radio cabling could end up carrying the starter current if you connected direct to both battery terminals.
* Installation instructions recommended connecting direct to the
battery to reduce noise- mainly from ignition and the alternator back
then. Cars didn’t tend to be filled with electronic gubbins.
Now, best practice is to only have one lead to the battery negative
and connect things like amateur radio kit to the point where the
earth strap joins the chassis.
True, this can lead to some noise but if the earth strap is ‘chunky’
and short to reduce the Z, this should be minimal, even in modern
cars were there can be more noise due to other electronics etc. I’ve
done this for years and never had a noise problem.
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