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

TOPIC: SS2PRO + HLA300 via EXT CTRL

How to to control HF Linear HLA300 via EXT CTRL connector? 20 Sep 2018 22:18 #1

Hello from Sweden!
The linear has an input to get it on air by shorting the input to ground.

The input has +5 volt in open state.

If i connect it to Sun SDR2 Pro EXT CTRL Pin Name X8 it will not work if I press PA on the main window and MOX to go on air.

Will open collector on X8 accept +5 Volt?
/Folke
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How to to control HF Linear HLA300 via EXT CTRL connector? 06 Nov 2018 07:31 #2

Hi!

I had the HL300V for short period of time. It worked fine without connecting anything besides RF cable (from SunSdr2 to PA).
I used auto band switching and it worked OK. No PTT conection, it detects RF - it's kind a VOX on PA.
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