XPost: rec.radio.amateur.moderated

Amateur/Ham Radio

///////////////////////////////////////////
Weekly Information / Mentor / New License Thread

Posted: 02 May 2022 06:00 AM PDT https://www.reddit.com/r/amateurradio/comments/ugp3ol/weekly_information_mentor_new_license_thread/


This thread is used for those who just passed their tests to introduce themselves, a place to ask questions that you think dont deserve its own
thread and a place to brag!
Posts will be sorted by new!
Before posting, please make sure to read our Rules, FAQs, and look over our Wiki Page as your question might have already been answered. Also, check
out our guidelines about posting personal information.

Weekly Nets And Chat Rooms: DMR Net: 0000 UTC Tuesday (Monday night US,
8pm Eastern). No net control. Brandmeister TG 98003. Also linked via
echolink. More info can be found here. HF Net: 01:30 UTC Monday Morning
(Sunday night US). Coordinate via IRC, no net control. Information can be
found here CW Noob Net: 02:30 UTC Saturday Morning (Friday night US). Coordinate via IRC, no net control. Information can be found here Official
IRC Channel - #amateurradio on Geekshed. Link to web-based client is here
but feel free to use whatever client you like. Official Discord Server - /r/amateurradio is on discord. Click here to join Collegiate Ham Radio
Groupme is here Young Amateurs Communications Ham Team EchoLink Net 19:00 Central Saturday Night /r/amateurradio group on the Brandmeister network -
TG 98003 - Listen Live - This talkgroup is bridged to AllStarLink node
48224 and Echolink node W5RI-L and on D-Star via XLX216 Module E North
American Traffic and Awards Net Nightly at 22:30Z on 7.185. If youd like to join a weekly net for new and returning amateurs, check out the details at http://ftroop.vk6flab.com, the net runs every week on Saturday, from 00:00
to 01:00 UTC on Echolink, IRLP, AllStar Link and 2m FM via various
repeaters. You can also listen via the brandmeister hoseline! Link on
homepage. submitted by /u/AutoModerator
[link] [comments]

///////////////////////////////////////////
Reddit Invades Dayton - Dayton Hamvention May 20 - 22, 2022

Posted: 02 May 2022 08:44 AM PDT https://www.reddit.com/r/amateurradio/comments/ugsjdr/reddit_invades_dayton_dayton_hamvention_may_20_22/

Dayton Dayton Dayton!
Were just a little over two weeks away from the return of the ham radio
event everyone talks about, the Dayton Hamvention. It seems like now might
be a good time to start the thread for all the attendees. Talk about where youre staying. Make a plan of attack for the flea market. Discuss which
Waffle Houses youll be activating. Ask questions to those who have gone.
Give tips to those who havent. Try to find that last minute place to sleep.
Let everyone try to come to an agreement on where and what time the Reddit Meetup at Dayton will occur. I will keep this post updated with information
as I get it.
I do know a couple of Redditors are doing Saturday only; so if we do one
big central meet-up for a photo op, it will have to be on Saturday.
#hamvention also now exists on both the Discord and IRC (irc.geekshed.net #hamvention) - They are bridged for maximum communication. Activity has
been light but should hopefully pick up the closer we get.
This is my first year going to this thing. Hope to see everyone there.
73,
-Jay/NQ4T

Reddit Meeting Time/Location: Saturday(?); TBD submitted by /u/dewdude
[link] [comments]

///////////////////////////////////////////
Portable operation in the local park on Sunday.

Posted: 02 May 2022 05:51 AM PDT https://www.reddit.com/r/amateurradio/comments/ugoxxl/portable_operation_in_the_local_park_on_sunday/

submitted by /u/dittybopper_05H
[link] [comments]

///////////////////////////////////////////
LNR Mountain Topper came today. This is the power cable. Which one is
negative?

Posted: 02 May 2022 02:39 PM PDT https://www.reddit.com/r/amateurradio/comments/uh0gif/lnr_mountain_topper_came_today_this_is_the_power/

submitted by /u/MTMicroAdventures
[link] [comments]

///////////////////////////////////////////
The simplest BPSK DSSS Radio Beacon with SDR demodulation

Posted: 02 May 2022 02:07 PM PDT https://www.reddit.com/r/amateurradio/comments/ugzr4m/the_simplest_bpsk_dsss_radio_beacon_with_sdr/

submitted by /u/jephthai
[link] [comments]

///////////////////////////////////////////
3D-printed USB-C charger for BaoFeng UV-5R

Posted: 02 May 2022 10:57 AM PDT https://www.reddit.com/r/amateurradio/comments/ugvj8f/3dprinted_usbc_charger_for_baofeng_uv5r/

submitted by /u/kn6tjj
[link] [comments]

///////////////////////////////////////////
Ham Radio and Operation Deep Freeze

Posted: 02 May 2022 08:08 AM PDT https://www.reddit.com/r/amateurradio/comments/ugrqvo/ham_radio_and_operation_deep_freeze/

submitted by /u/plumcreek
[link] [comments]

///////////////////////////////////////////
Do Any Communities Actually Implement RRI's Neighborhood HamWatch or
National SOS Network?

Posted: 02 May 2022 03:48 PM PDT https://www.reddit.com/r/amateurradio/comments/uh1wmx/do_any_communities_actually_implement_rris/


I just found out about Radio Relay International (RRI) a few days ago via
an old episode of the Dit Dit Dah podcast. Most of what they have published
on their site is focused on using FRS/GMRS channel 1 and having hams in the area act as a gateway to HF for emcomm. I like the idea. I understand the reason for the focus on FRS/GMRS, but Im a bit surprised there is no
mention of CB channel 9 in any of the documentation.
Have any communities implemented this in the the past? What was it like?
Did it work well? submitted by /u/s-ro_mojosa
[link] [comments]

///////////////////////////////////////////
TYT MD-UV390G Gap (Water Resistant)

Posted: 02 May 2022 05:02 PM PDT https://www.reddit.com/r/amateurradio/comments/uh3cqy/tyt_mduv390g_gap_water_resistant/


Hey there fellow operators,
I picked up a TYT MD-UV390G after working an outdoor event where we had a little rain. I enjoyed making a HT pancho but id prefer a water resistant
HT for that weather.
It claims to be IP67. Anyways I usually put a Nagoya NA-771 on my HTs.
However with that antenna and HT, there more of a gap than with the stock antenna, the stock antenna still has a small gap where I can see down in
there.

https://preview.redd.it/6nhxvoh0j5x81.png?width=1284&format=png&auto=webp&s=3fca53fe492a5f7522205d4573a6feb230bb01a4
Should I be concerned with water getting in there?

https://preview.redd.it/uqlnwx12j5x81.png?width=1284&format=png&auto=webp&s=4dc352c65be508e9228f16b5cfc81b30c017bb54
Should I get something to seal it? Just making sure I dont go all out in
the rain and mess it up lol

Thanks! submitted by /u/ThatFellaNick
[link] [comments]

///////////////////////////////////////////
Still seeking someone to improve D-Star Open-AMBE

Posted: 02 May 2022 11:54 AM PDT https://www.reddit.com/r/amateurradio/comments/ugwsy4/still_seeking_someone_to_improve_dstar_openambe/


For what is worth, Steve, N8GNJ wrote a pretty good piece titled "Dear Matt
and Gerald Youngblood" requesting FlexRadio develop a radio for the VHF/
UHF bands: https://zeroretries.substack.com/p/zero-retries-0043?s=w
Short of that happening (and I am not holding my breath on that or the M17 project I believe its more than logical to try and drum up talented
programmers to work on improving the AMBE code we already have as there is
only one patent left and its not clear if it even applies, and if about to expire anyway. I have a thorough overview of the why and so forth here: https://www.qsl.net/kb9mwr/projects/dv/codec/ambe.html
But here are the starting places for potential developers: https://github.com/szechyjs/mbelib/commit/2656ec2202e15468f92dca0c226919166928c52e
-
This is the initial DSTAR AMBE implementation.
https://github.com/nostar/dudestar - DudeStar / DroidStar
https://github.com/nostar/DroidStar - DudeStar / DroidStar
https://github.com/f4exb/dsdcc - dsd rewrite - C++ library with a single decoder object
https://github.com/LX3JL/xlxd
https://github.com/szechyjs/dsd
https://github.com/szechyjs/mbelib
https://github.com/LouisErigHerve/dsd
https://github.com/lwvmobile/dsd-fme
http://git.osmocom.org/op25/tree/op25/gr-op25_repeater/lib - Op25 has
encode and decode support for AMBE (D-Star, DMR and YSF) and IMBE (P25)

https://github.com/balint256/op25/tree/master/op25/gr-op25_repeater/lib/imbe_vocoder
- Pavels IMBE Encoder/Decoder Fixed-Point implementation
https://github.com/pizzabeerllc/vocoder_plugin
http://git.osmocom.org/osmo-gmr/tree/src/codec
https://github.com/on1arf/voice-ann
https://github.com/dl1bff/ircDDB-mheard/blob/master/ircDDB-mheard.c - Line 383 - handles the bit interleaving and FEC processing
https://github.com/travisgoodspeed/md380tools/ - The MD380 Emulator
(capable of AMBE encoding and decoding)
https://github.com/kawks/dstar-n800
https://github.com/g4klx/AMBETools submitted by /u/kb9mwr
[link] [comments]

///////////////////////////////////////////
Active FM 2M 70cm repeaters Houston Medical Center Area

Posted: 02 May 2022 06:43 PM PDT https://www.reddit.com/r/amateurradio/comments/uh58kw/active_fm_2m_70cm_repeaters_houston_medical/


Good evening Reddit, I’m currently on a business trip to Houston and
staying in the Medical Center area. I brought an HT with me and was
wondering if anyone knew of any repeaters that are active in this area. I
threw my call out on a couple close by but did not get any response.
Thanks! submitted by /u/nashphoto615
[link] [comments]

///////////////////////////////////////////
The History Guy: Ham Radio and Operation Deep Freeze

Posted: 02 May 2022 05:16 AM PDT https://www.reddit.com/r/amateurradio/comments/ugobpx/the_history_guy_ham_radio_and_operation_deep/


I thought, this was a fascinating video about amateur radio and Antarctic exploration submitted by /u/cam-era
[link] [comments]

///////////////////////////////////////////
Isn't there an online fake RF network?

Posted: 02 May 2022 06:58 AM PDT https://www.reddit.com/r/amateurradio/comments/ugq914/isnt_there_an_online_fake_rf_network/


Years ago I read something about a n online system that simulates ham communications. A simulation.
I need to practice CW, but without using real RF. I have a lot of work I
need to do to bring my new place back on their air and field day is 2
months away. This ham simulation popped into my mind. submitted by
/u/linxdev
[link] [comments]

///////////////////////////////////////////
How far can a signal on 2 meters go in a suburban environment?

Posted: 02 May 2022 05:19 PM PDT https://www.reddit.com/r/amateurradio/comments/uh3nry/how_far_can_a_signal_on_2_meters_go_in_a_suburban/


Hi everyone! New tech here, about to be general in 2 days :) I am able to
get 2 miles range on VHF in an urban environment at 8 watts output using a rubber duck dipole. The antennas are not mounted at any height, just two
people holding them, so the radio waves are going through buildings. That rubber duck dipole should have ~2db gain (over an isometric antenna).
Suppose I used a 11 dbi yagi antenna instead on both ends, not mounted at
any height, so the radio waves are still going through buildings. As I understand it, for every 3 db, there is a 2x increase in power (in the strongest direction of gain). So, 11 db is 9 db greater than the 2 db for
the simple rubber duck dipole, which means the effective wattage (in the direction of gain) would be 3x. Suppose I used a 50 watt transceiver as
well. That would put the effective wattage (in the direction of most gain)
at 150 watts.
Based on my understanding of the inverse square law, in order to double the amount of signal (I guess.. the # of photons?) and therefore double the distance, you need to double the wattage. So if I made a table of wattage
vs distance, it would look something like this:
8 watts 2 miles (confirmed experimentally) 16 watts 4 miles 32
watts 8 miles 64 watts 16 miles 128 watts 32 miles 256 watts 64 miles
Now I know you would run up against the radio horizon at around 30 miles as well.
Now note that I am a total noob when it comes to all of this and I might be
way off. Please tell me if I am, I want to learn! But does this mean that
two radios (with the yagi antennas pointed at each other, located inside of homes) may be able to communicate ~30 miles? submitted by /u/transmissionfactory
[link] [comments]

///////////////////////////////////////////
Stupid dmr mmvdm question about testing

Posted: 02 May 2022 11:44 AM PDT https://www.reddit.com/r/amateurradio/comments/ugwljl/stupid_dmr_mmvdm_question_about_testing/


A local ham has a dmr radio that is vhf only and wants a hotspot but cant
find any raspberry pis that arent stupid expensive. I have 3 pi zero Ws in
a drawer. So I ordered a mmvdm board that says it supports uhf and vhf. The reviews are mixed on the vhf support.
Im getting the board today and going to get it all set up however Ive been
told and I also assumed I would have no way of testing this thing on vhf
unless I have a dmr radio, right? There is no way I can at least see if its listening on vhf or anything? I cant get together with the guy until the weekend and I want to send this back if it doesnt work. Ill have a return window that will cover it I just wanted to make sure before fumbling
through stuff this weekend only to find out it wont listen on vhf.
My plan is to just give this to the guy to use until I can afford my own...
At the current rate Im going with all this medical crap, hell be using it forever. Lol submitted by /u/thecodemonk
[link] [comments]

///////////////////////////////////////////
Echolink

Posted: 02 May 2022 02:38 PM PDT https://www.reddit.com/r/amateurradio/comments/uh0fd0/echolink/


I tuned in to a repeater over 8 miles away using a HT, I received nothing.
But when I connected to it via Echolink using my phone, I got reception on
the HT. Why is that? submitted by /u/banana_2019
[link] [comments]

///////////////////////////////////////////
Heliax coaxial cable tools, connects and future proofing antennas

Posted: 02 May 2022 12:43 PM PDT https://www.reddit.com/r/amateurradio/comments/ugxw1s/heliax_coaxial_cable_tools_connects_and_future/


Hi Im trying figure out where to find tools for putting weather resistant connectors for ⅞" Heliax cables that are affordable?As Ill be using said cable for the primary loop of a portable magnetic loop antenna. Also which connectors should I use for connecting the cable to the high voltage vacuum variable capacitor? Speaking of high voltage vacuum variable capacitors and future proofing. I currently have a Xeigu G90, which has a rf output of 20 watts. Though Ive havent ruled out using a 125 watt amplifier or a 100 watt base station in the future. Should I get a high voltage vacuum variable capacitor that has a high enough voltage rating for the amplifier and deal
with the extra cost and possibly bulk, or save some money and get a
capacitor that can only deal with 20 watts rf? Any advice would be greatly appreciated sincerely the OP submitted by /u/Independent_3
[link] [comments]

///////////////////////////////////////////
D-Star's GPS Usefullness

Posted: 02 May 2022 10:36 AM PDT https://www.reddit.com/r/amateurradio/comments/ugv1zc/dstars_gps_usefullness/


Im upgrading to an ICOM IC-2820H which has the DMR and GPS module installed.
It does not support APRS, sadly, but it does support GPS over DMR. So, Im wondering how useful it is. How many D-Star users also have gps radios with
it on? Is there some sort of mapping website to show where D-Star users
are, similar to APRS? Id like to be able to have people see where I am on a map, if possible.
Anything else cool yall think I should know about the IC-2820H?
Thanks! submitted by /u/LinuxIsFree
[link] [comments]

///////////////////////////////////////////
help with icom ic8000 ( reversed polarity )

Posted: 02 May 2022 07:02 AM PDT https://www.reddit.com/r/amateurradio/comments/ugqcau/help_with_icom_ic8000_reversed_polarity/


hello everyone i need help with my icom v8000 i used this radio for the
past 20 years with no problems whatsoever until i reversed the polarity
trying a new wire, i want to fix it but idk from where to start i know
there is a protection diode somewhere but idk the number nor the location
of that diode, any help with the location and the number of that diode will
be appreciated. (v8000 not ic8000 ) submitted by /u/aub_7007
[link] [comments]

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)