[hpsdr] Hermes question -- amplifier keying

[Jeff Kelly]

I used 2 and 25 on the breakout cable from Hermes and it worked fine
keying the 418.  (make sure you have the corrected pin #'s)

Jeff
K2SDR



-----Original Message----- 
From: John Ackermann
Sent: Sunday, May 26, 2013 9:35 AM
To: HPSDR List
Subject: [hpsdr] Hermes question -- amplifier keying

***** High Performance Software Defined Radio Discussion List *****

I'm probably going to be bother the list a few times over the next week
or so as I try to get my portable Hermes station ready for a trip to
northern Michigan.  I'll post these questions separately to keep any
threads organized.

I'm using a TAPR-built Hermes with the Apache Labs 10W amp and
enclosure, so it looks like an ANAN-10 to PowerSDR.

The 10W output is driving a Ten-Tec 418 amp (5-10W in, 100W out).  The
418 has both a key-in and a key-out line.  If I read the documentation
correctly, the key out has a 4ms delay on keying to avoid hot switching.

Question -- should I simply use the Hermes key-out line to drive the 418
and count on the Hermes TX sequencing, or is it worthwhile to send PTT
to the 418 key-in and let the 418 key-out drive Hermes?

Thanks,

John
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