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In this category, you can discuss different ways of connection between EE radios and external Power Amplifiers.

TOPIC: SS2PRO + HLA150

SunSDr 2 / hla150 06 Nov 2017 09:29 #1

Hello I have the sunsdr2pro and HLA150.
I have no problem with the CW and the digital modes but I have a big problem with the ssb.

Actually the amp works without ALC jack (rca), when I make the ssb the amp is in vox and quickly cut this gives me a bf hatched output.
I tried to connect a RCA (alc) sdr to hla but the amps do not switch in ptt.

How can I make this amp goes in ptt manual and not in vox?

Fabien f4hik
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SunSDr 2 / hla150 04 Dec 2017 21:35 #2

I had a HLA-300V working with the SunSDR. I sold it as i noticed cutoff's in SSB (CW/Dig was ok as yours). I then used a KXPA100 from Elecraft - it worked fine. Sadly i sold it (too much wires) and then bought a MX-P50 PA from China... Crap - stopped working after 3 months and because there is no real schematics of the board or a support from the seller or factory, i could throw it away soon... never got it repaired after that... At the moment i don't have a driver PA for my SunSdr, so i mostly use my K3... i really miss the sdr, but have no money to buy a complete new pa. The RM Italy PAs are ok, but worse, really worse for ssb...
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SunSDr 2 / hla150 04 Dec 2017 22:32 #3

DM5EM, thank you for your answer so I found the solution with the help of my boyfriend ... I just installed a relay 12v 2A, 12V taken on the sunsdr and it switches me my HLA 150 and my big PA in same time in SSB.
It is simply necessary at each boot of the hla150 to make a small tune to disable the vox and then it works perfectly in PTT
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