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With the recent frequency change of 30m APRS over VARA traffic to 10.1482 MHz I have figured out a way to be able to decode robust packet as well as AX.25 and VARA APRS traffic with one radio. Usually robust packet APRS uses a transceiver tuned to a dial frequency of 10.1473 MHz with the robust packet audio centred at 1500 Hz. The new APRS over VARA frequency now means that the robust packet traffic can be heard in the same receiver but the audio is centred 900 Hz lower at 600 Hz. Here's how I worked out a way to mix the frequency up to 1500 Hz using HDSDR SDR software. This may be useful for other applications. The receiver audio from the transceiver appears on a USB sound card connected to the transceiver. This audio is applied to the VARA HF modem, UZ7HO sound card modem for 300 bd AX.25 packet and HDSDR. In HDSDR select the USB sound card connected to the transceiver as the input sound card. As it's a mono audio signal you will see two sidebands on the main display centred at 0 Hz on the HDSDR display. In HDSDR set Options/Misc Options/set LO <-> Tune Offset to -900 Hz. In HDSDR select Options/Misc Options/Tune Fixed to 'LO <-> Tune Offset'. Select the output sondcard in HDSDR. I use the LoopBeAudio virtual audio cable as it has near zero latency. The popular VB-Audio virtual audio cable has nearly has a latency of nearly 0.5 second so it is unsuitable for data operations. In WinRPR select LoopBeAudio as the input sound card. The original audio centred at 600 Hz now appears at 1500 Hz and WinRPR will now decode robust packet data. You can go into HDSDR and tighten up the filter on the robust packet data. To do all this you will need a fast PC to handle the three decode programs and the SDR program but it will work reliably. Mine has run for 4 hours so far and I'll leave it running for the next few days. I'm using a Tentec Corsair II with a synthesiser I originally developed for a SDR transceiver that we never put into production. This has a 1.8 kHz crystal filter originally used for SSB DXing and contests which allows all three APRS data streams through. If you want to check on APRS.FI I'm running GM4HYG-1 for 300 bd AX25 and robust packet and GM4HYG-2 for APRS over VARA. Regards, Chris GM4HYG

As of 0000 Hrs UTC 1 January, the WA8LMF APRS-over-VARA igate and webserver has moved from the old APRS-over-VARA channel (10.147.60 MHz USB) to the new channel at "dial frequency" of 10.148.200 MHz USB . This corresponds to an actual RF center frequency for VARA of 10.149.700 MHz . You can view the real-time mapping anytime on my webserver at <http://wa8lmf.ddns.net:14439/index2.htm> Note that the new VARA map spans the Atlantic because we ARE hearing stations from the UK and Europe here in Michigan, USA on APRS-over-VARA. Or visit the gateway page for all the WA8LMF igate/webservers at: <http://WA8LMF.net/map> Stephen H. Smith wa8lmf (at) aol.com Skype: WA8LMF EchoLink: Node # 14400 [Think bottom of the 2-meter band] Home Page: http://wa8lmf.net 30 Meter APRS-over VARA Frequency Change As of 1 Jan 2025. Details Here: <http://WA8LMF.net/VARA/NewFrequency.htm> - APRS over VARA -- <http://wa8lmf.net/VARA/APRSoverVARA> "Studio B" Ham Shack on Wheels <http://WA8LMF.net/Aliner> -

Is there a way to add the internal tuner feature for the FT 710? Thanks, jim/K2JJK

I have been using my licensed VARA hf modem with VarAC for some time. I have not been able to get the VARA modem to talk to Pinpoint. I have followed the set up instructions. Pinpoint works fine for showing stations via internet. However, no luck with radio positions. Both pinpoint and VARA kiss ports are set to 8100. When I click on “Connect TNC”, I get an error message saying unable to connect. I suspect I am using the wrong up address. I used the default ip 127.0.0.1 and get the no connect message. I tried the ip of the PC that both VARA and Pinpoint are running on and still no connection. I would appreciate any assistance. Bob, KN4HH

If you have Facebook, please join our VARA APRS group! https://www.facebook.com/groups/355264387119488 There are a lot of discussions on which bands and frequencies are best for reliability and coverage for your region. If you're in the US and the especially the PNW, we operate on 7.083.50 USB! With 99% coverage across the BC, Washington, Oregon, Idaho, California, and other outlying areas. When there's no extreme sun activity of course. It's not often 40M doesn't work for us.

I am interested in using and joining this mode of operation but fail to fully understand the basics of operation. I have used and currently have installed Winlink RMS client software and have completely operational. I access my local RMS VARA high speed Vara FM and also use VarAC HF mode. I also have have FLdigi latest version installed and using for sitorB monitoring and other modes. Can someone please explain to me what use does APRS and fundamental operation use do (other than location) and explain thoroughly give example of all software combined actually do? How are messages sent? What SW are you using? FLdigi? I like to utilize 30 meters but fail to find others who use this band for much of any mode other than FT8, which I have no interest in whatsoever. Todd AL7PX

Hi Has anyone setup a FTM-7250 on VARA FM 4.3.8? If so, which Yaseu model did you select for PTT? And is either of the RTS or DTR boxes checked? I have a Soundlink that I would like to configure with it. Thanks and Happy Holidays Doug Friedt N8FRJ

Hello all - I cannot get VARA HF to trigger my rig’s transmitter. The 5000 is not listed on the Radio drop down on the Vara HF Winlink Session window. I tried several Yaesu rigs to see if that would work, but it didn’t. Using Winlink Express ver 1.70.20.0 and VARA HF ver 4.7.6 I’m using the Yaesu SCU-17 modem. It works fine with WSJT, but not on Winlink/VARA-HF. Ideas? TNX

I have just discovered that during the re-organizing of my website pages focusing on VARA and APRS, that I accidentally screwed up links and left out some important pages. This included pages on configuring various APRS client applications to work with VARA. This has now been fixed, I hope! Main gateway page to VARA-related topics: <http://WA8LMF.net/VARA> Main page for using APRS-over-VARA with various APRS clients <http://WA8LMF.net/VARA/APRSoverVARA/index.htm> 30 Meter APRS-over-VARA Frequency Change <http://WA8LMF.net/VARA/NewFrequency.htm> Stephen H. Smith wa8lmf (at) aol.com Skype: WA8LMF EchoLink: Node # 14400 [Think bottom of the 2-meter band] Home Page: http://wa8lmf.net 30 Meter APRS-over VARA Frequency Change Coming 1 Jan 2025. Details Here: <http://WA8LMF.net/VARA/NewFrequency.htm> - APRS over VARA -- <http://wa8lmf.net/VARA/APRSoverVARA> "Studio B" Ham Shack on Wheels <http://WA8LMF.net/Aliner> -

Hi IM is so low, even music is clear. Firmware coming out soon. /g/QRPLabs/message/131647 73 DE muhsin, TA1MHS

Due to frequency overlap with, and interference to/from, the "Robust Packet" channels used in Europe, APRS-over-VARA is moving to a new channel ABOVE the present AX.25 APRS channel on 30 Meters. Currently, APRS-over-VARA is operating with a radio "dial frequency" of 10.147.600, placing the center frequency of it's 500-Hz wide RF signal at 10.149.100 MHz. Starting January 1st 2025 at 0000 UTC, the new RF channel center will be 10.149.700 MHz . To make the change, set your radio "dial frequency" to: 10.148.200 MHz USB Until Jan 1st, I will be running the old channel as usual, and ALSO beaconing test signals (KJ4ERJ's Space Station Object) every two minutes on the new channel. More info is on my web site at: <http://WA8LMF.net/VARA> This page is a gateway page to multiple posts on VARA and APRS-over-VARA that have previously been scattered rather haphazardly around my web site. Click on the link in the yellow box near the top of the page for the frequency change info. Stephen H. Smith wa8lmf (at) aol.com Skype: WA8LMF EchoLink: Node # 14400 [Think bottom of the 2-meter band] Home Page: http://wa8lmf.net APRS-over-VARA igates now operating on 30 & 60 meters <http://WA8LMF.net/map> "Studio B" Ham Shack on Wheels <http://WA8LMF.net/Aliner> -- APRS over VARA -- <http://wa8lmf.net/VARA/APRSoverVARA.>

Winter Field Day logging - How are you guys logging VarAC contacts for Winter Field Day. "Data"? "PSK"?