XPost: rec.radio.amateur.moderated

Amateur/Ham Radio

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PSA: Announcing that you got your license today can dox yourself

Posted: 29 Mar 2022 09:33 AM PDT https://www.reddit.com/r/amateurradio/comments/tr6wry/psa_announcing_that_you_got_your_license_today/


Some people here are public about their identities and even share their
call signs as flair. But some users like to remain anonymous. So remember
that FCC licenses are public information. Sharing the day that you got your license could be enough for someone to figure out your name and home
address. submitted by /u/TrueBirch
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Yaesu FT5DR hidden micro switch

Posted: 29 Mar 2022 04:48 PM PDT https://www.reddit.com/r/amateurradio/comments/trt7kf/yaesu_ft5dr_hidden_micro_switch/

submitted by /u/iiTool
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D1DX on 20M FT8 this evening...

Posted: 29 Mar 2022 10:18 PM PDT https://www.reddit.com/r/amateurradio/comments/trz2ck/d1dx_on_20m_ft8_this_evening/


Someone said they might be some bogus Eastern Ukraine ops? Anyone know
more?? submitted by /u/6-20PM
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Any bets on when arrl.org website comes back online?

Posted: 29 Mar 2022 09:13 AM PDT https://www.reddit.com/r/amateurradio/comments/tr66wk/any_bets_on_when_arrlorg_website_comes_back_online/


So http://www.arrl.org/ is down -- archive link. It says that it should be
back online by now:
We will be debuting our new look on Tuesday morning so please join us then.
But its noon on Tuesday and theres nothing yet. So place you vote on when
you think the site will be back with its new look.
This poll is only open for 1 day.
View Poll submitted by /u/kc2syk
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JTDX can automatically send QSO for confirm?

Posted: 29 Mar 2022 09:29 PM PDT https://www.reddit.com/r/amateurradio/comments/try9yd/jtdx_can_automatically_send_qso_for_confirm/


Just wondering, if I can use JTDX and make QSOs whiout having to enter eQSL
or qrz for make the QSO confirmation? (I dint used google translate for
this post: me refería si podía usar JTDX sin entrar a eQSL o qrz para subir los QSO, para ahorrar tiempo.) submitted by /u/Dismal_Newt_5565
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Using RT Systems with the FT-70D, or others with USB

Posted: 29 Mar 2022 04:50 PM PDT https://www.reddit.com/r/amateurradio/comments/trt8w7/using_rt_systems_with_the_ft70d_or_others_with_usb/


I know that RT Systems says you have to buy their cable, but since its just
a usb COM port adapter, how is it so different from the USB COM port
adapter thats built into the FT-70D, or other radios?
Has anyone actually tried using the ADMS-70D software with the FT-70D, the
USB mini cable, and the "power-on, remove battery, hold AMS, insert
battery, press Band or Mode" process to clone the radio?
Im on a Mac, but RT systems do show a regedit to force com port selection,
so I suspect there isnt anything too special about their cable.
Im also not against paying for software, just against paying more money to
ship a cable than the cost of the cable itself, and generating unnecessary e-waste. submitted by /u/-engiblogger-
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Do ARRL Radiograms still get sent?

Posted: 29 Mar 2022 09:34 AM PDT https://www.reddit.com/r/amateurradio/comments/tr6x3y/do_arrl_radiograms_still_get_sent/


Hello. I know nothing about ham radio, so please bear with me. Id really
like to send a friend a birthday message via ARRL radiogram, but Im not
sure if thats still really possible. A few years ago, I tried contacting my local operators club to start the message chain, but apparently the message never made it to my (non-ham-using) friend. Do you all think its still
worth trying? submitted by /u/BigKagi
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Broadcast-only Spread Spectrum?

Posted: 29 Mar 2022 02:03 PM PDT https://www.reddit.com/r/amateurradio/comments/trlj8a/broadcastonly_spread_spectrum/


Are there any common wireless links (Wifi, ZigBee, BLE, etc) that can be configured to only transmit in one direction?
A lot of wireless stacks include channel negotiation handshakes and
other "back and forth" transmissions by both sides.
On the other hand, GPS is a transmit-only spread-spectrum signal.
Example scenario: A battery-powered sensor transmits data when it senses an event. It doesnt check to see if anyone received it, it just transmits
several times and goes back to sleep.
A receiver, paired with the transmitter, listens and receives the data,
without transmitting.
Ideally both would use off-the-shelf radio modules - things that work with common microcontrollers.
This would be fairly simple with a 933Mhz or 433Mhz radio module that uses
ASK or FSK. But spread-spectrum would help with noise and congestion.
I can see a problem where the transmitter needs to broadcast a carrier long enough for the receiver to synchronize (like with GPS).
Is there anything like this? submitted by /u/doctor_strangecode
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Why is a pencil lead used for a diode in crystal radios?

Posted: 29 Mar 2022 11:48 AM PDT https://www.reddit.com/r/amateurradio/comments/treeyo/why_is_a_pencil_lead_used_for_a_diode_in_crystal/


Ive made a lot of crystal radios in the past,and the basic diagram of a
crystal radio always has a rusty razor blade and a piece of
graphite(usually pencil lead) as the diode.i understand iron oxide in the
blade is used as a semiconductor,but why do they always use a pencil
lead?it isnt a semiconductor,it actually acts as a resistor(more resistance than copper) and serves no particular use,as far as i know.
i recently made a crystal radio with an oxidized copper coin and an
oxidized razor blade,it is by far the best diode i have ever made,much less resistance and it probably rectifies better too.
my only guess is that the pencil lead is somewhat soft,so it wont scratch
the oxide off the razor blade,just leave a trace of graphite on it,which is conductive anyways,as i had problems with the razor blade scratching off
the oxide on the coin before.
interesting thing i heard of:ww2 prisoners used a piece of coke(not the drink,the coal derivative) mounted on a coil as a semiconductor.
submitted by /u/ZatannaIzSwag
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LiFePO4 chargers with reasonable emissions

Posted: 29 Mar 2022 08:56 AM PDT https://www.reddit.com/r/amateurradio/comments/tr5aei/lifepo4_chargers_with_reasonable_emissions/


Hello, I am looking to upgrade my portable station to LiFePO4 batteries.
They will be charged in my shack/shop and I would really like to get a
proper LiFePO4 charger for them. Unfortunately, these are all going to
he "smart" chargers, and my experience with smart chargers has been that
they completely destroy my noise floor if O use them anywhere near the
shack.
The charger I was looking at (Noco Genius) is, according to its manual, an industrial device and is likely to cause harmful RFI in a residential
setting. Props to them for acknowledging this, as my last "smart" charger
had NO fcc labeling or statement in the manual and completely destroyed 40m
for me (s9+).
Are there any relatively high powered LiFePO4 chargers out there that are quieter on RF, and deliver at least 5a, but preferably 10a? submitted
by /u/betterl8thannvr
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I need a help, I'm new

Posted: 29 Mar 2022 10:40 AM PDT https://www.reddit.com/r/amateurradio/comments/trak8l/i_need_a_help_im_new/


I recently found an old handheld radio in my house, Is it safe to use
handheld radio with no license if i dont want to transmit through it i just want to recieve. Btw i dont know how to use it there is no tutorials on
youtube for this model
Edit: The model is rexon rl-102 submitted by /u/Confident-Pair1562
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Best Study Guide for tech licensing?

Posted: 29 Mar 2022 03:25 AM PDT https://www.reddit.com/r/amateurradio/comments/tqwond/best_study_guide_for_tech_licensing/


Whats the best guide for tech licensing? submitted by
/u/Bastilleinstructor
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SDR QSO?

Posted: 29 Mar 2022 11:01 AM PDT https://www.reddit.com/r/amateurradio/comments/trb0wn/sdr_qso/


Ok, so Im in Nv and I put out a CQ from the very poor, deaf, very temporary antenna system inside the house...but I was listening on the SDR near Salt Lake. I worked the guy like that.
Does it count? :p
Im still loggin it. lol.
125 Sunspots today. Go 20 meters! https://www.spaceweatherlive.com/en/solar-activity/sunspot-regions.html submitted by /u/SignalWalker
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Arduino Radio Modules for long range

Posted: 29 Mar 2022 02:08 PM PDT https://www.reddit.com/r/amateurradio/comments/trlzeg/arduino_radio_modules_for_long_range/


Hello, I am wanting to control a remote telescope from college where the telescope is located at home approximately 200 km away. However, I cannot
find any Arduino modules where there would be significant range. The
closest solution I could find was the LORA radio module which can be either
433 or around 900 megahertz. However, these modules would need really tall towers to extend their horizons. Are there any lower frequency radio
modules that can be used with Arduino that can extend range beyond line of sight? Im thinking of some kind of HF packet radio system to send commands
to the telescope but not finding anything. Given no solution is found I
will probably use a GSM shield or use a relay station. submitted by /u/jebbiekerman
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16 foot fishing poles for Moxon spreaders..

Posted: 29 Mar 2022 01:51 PM PDT https://www.reddit.com/r/amateurradio/comments/trk9gm/16_foot_fishing_poles_for_moxon_spreaders/


Nobody will say where to get them!
I have found *SO MANY* documents online mentioning "I used four of these 16 foot long fishing poles for my spreaders" but nobody mentions where they
got them, or how much they cost. Why is that? Ive even emailed authors of a
few of those articles to ask them and they STILL wouldnt tell me.
Is this some inside joke shared by Moxon antenna builders? submitted by /u/Steve_but_different
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Best history book of amateur radio?

Posted: 29 Mar 2022 02:30 AM PDT https://www.reddit.com/r/amateurradio/comments/tqvxlz/best_history_book_of_amateur_radio/


I come from cyberspace a programming background, and one of the best
history books on my world is Hackers: Heroes Of The Computer Revolution. In
it, the history of contemporary lingo (hack, bug, bork etc) is traced back
to old bbs, and stories of breaking into mainframe buildings to steal time
from the snooty mathematicians are chronicled.
Whats a book of the history of amateur radio with a similar flavour?
I want to read about Marconi, sure, but I also want to read about the less-well-known renegades and pioneers, read about how Q-codes evolved, and
how the hobby emerged both in the US and UK, and around the world.
Thank you! submitted by /u/0atman
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If I started a company to record, transcribe, metatag, archive, report, publish, and distribute *ALL* amateur radio traffic, for profit...

Posted: 29 Mar 2022 09:39 PM PDT https://www.reddit.com/r/amateurradio/comments/tryg3t/if_i_started_a_company_to_record_transcribe/


...Would everyone hate me?
Americans always complain about the FCC publishing their addresses... They
say there is a difference between posting it online and saying it over the air... But what if what you said on the air were being sold on the
internet? submitted by /u/_is-ShavenBear
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FT8 for beginners

Posted: 29 Mar 2022 11:04 AM PDT https://www.reddit.com/r/amateurradio/comments/trbd4k/ft8_for_beginners/


Can anyone direct me towards any resources to get in to FT8 on the cheap as
a beginner with a tech license? Thanks. submitted by /u/stiffneck84
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Help needed to identify this rubber ducky antenna

Posted: 29 Mar 2022 10:55 AM PDT https://www.reddit.com/r/amateurradio/comments/travqh/help_needed_to_identify_this_rubber_ducky_antenna/

submitted by /u/bf494
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Shout out to UK hams who own / has access to Moto DP4400 / DP4800 with activated encryption option and willing to help in testing - Help Ukraine

Posted: 29 Mar 2022 10:01 AM PDT https://www.reddit.com/r/amateurradio/comments/tr9kbt/shout_out_to_uk_hams_who_own_has_access_to_moto/


Hello folks,
I volunteer for Kyiv territorial defense and we are looking to do some AES related tests to ensure that the radios we are about to buy in bulk and
ship to Kyiv are compatible with Motos in DCDM.
I need to temporarily borrow two DP4400 / DP4800 units of same band, doesnt really matter whether VHF or UHF, we need two radios on the same band for testing purposes - ideally with programming cable but I can buy that if you dont have it.
I will cover postage costs and can provide some guarantees of return in
private message.
I reached out to Motorola Solutions UK with this exact question but I feel
its quicker to reach out to the community.
UK hams, if you dont have any Motos but know someone who owns it and is
willing to help - please do pass me their contact details in private
message.
Thank you! submitted by /u/tycpyzdyc
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Upgrade from RTL-SDR?

Posted: 29 Mar 2022 04:45 AM PDT https://www.reddit.com/r/amateurradio/comments/tqxwu8/upgrade_from_rtlsdr/


Hi folks, whats the next step up from an RTL?
Id like to transmit up to my license of 10W from my computer, is there a $200-500ish option for me, before taking the leap to the bigger SDRs? 6m in addition to 2m / 70cm would be a big plus.
What are you folks using? submitted by /u/0atman
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