[Fourlanders] Alinco DR-135TMK3

[Ron Rogers]

Thanks Sherman..

Yes, I had heard the use of Alnico radios for APRS service was frowned upon
but never heard the real reason. I thought maybe it had to do with
reliability, etc.

 

Our N4NE-1  I-Gate digi on Sawnee Mountain uses a Kenwood radio.

 

Ron

WW8RR

 

From: Fourlanders
[mailto:fourlanders-bounces+ww8rr=charter.net at contesting.com] On Behalf Of
Sherman W4ATL (w4atl at shermanbanks.net)
Sent: Wednesday, April 12, 2023 4:19 PM
To: fourlanders at contesting.com
Subject: [Fourlanders] Alinco DR-135TMK3

 

I had been noticing some 2M interference that a ham friend traced to a APRS
digipeater that is using an Alinco DR-135TMK3 2M radio. These radios are
very popular in the APRS community. Unfortunately, they have a synthesizer
issue that causes a wide frequency swing when keyed. APRS repeaters are
keyed a lot. The offending radio was near Jasper, GA and it has been
replaced. You can imagine how bad it is if I can hear it in Dunwoody but the
radio is in Jasper. 

 

I am still seeing some jumps in the 2M spectrum so there may be some more of
these radios that need to be replace.  If you see periodic bumps in the 2M
spectrum check to see if you see a corresponding APRS transmission.
Hopefully these offending radios will be replaced once the owners are
notified. 

 

Check out the video of the Alinco radio versus a Kenwood and Icom.

 

https://www.youtube.com/watch?v=PRpkR9J2L5M

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.contesting.com/pipermail/fourlanders/attachments/20230412/8f4579c0/attachment.html>