[hpsdr] Hermes question -- amplifier keying

[John Ackermann]

Thanks, Jeff! (a bit slowly -- just getting back to this after a few 
very hectic days).

73,
John
----

Jeff Kelly said the following on 05/26/2013 09:52 PM:
> 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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