Hot switching with 1A2R

Rick N0VT

I'm hoping someone else is using a 4O3A "1-amplifier-2-radio" switch (a.k.a. 1A2R) successfully and can help me out.

I am using a 1A2R with my 6600 and ACOM solid state amp. I have had to replace the relays in the 1A2R twice in 5 months and the folks at 4O3A believe that it's due to hot-switching.

Their tech support suggests connecting each unit in this manner:

1. From radio TX1 from radio to 1A2R PTT input.

2. From 1A2R PTT output to ACOM key in 

3. From ACOM key out to radio PTT.

Step #3 has me confused. Where would I plug in my footswitch?

It seems that the correct way to solve this would be to simply set the RCA TX delays to "0" and the TX Delay to "20" or larger to give all the relays time to close before RF goes out. Am I off base about this? I hope someone has already figured this out because both 4O3A tech support and I are tired of me going through relays so quickly.

73

Rick N0VT

Mike-VA3MW

@Rick N0VT

You might want to email 403A support directly as they don't monitor this group and they market that software.

www.4o3a.com

73

Rick N0VT

Already did.

>Their tech support suggests connecting each unit in this manner:

>1. From radio TX1 from radio to 1A2R PTT input.

>2. From 1A2R PTT output to ACOM key in 

>3. From ACOM key out to radio PTT.