[Amps] Multiple Amplifier Switching Box

[N2BC]

As I said my experience is with the TT Titan.  Standby simply cuts off the
PA and inhibits transmit.  If you look at the diagram, you will see a
capacitive coupled circuit on the RF input BEFORE any TR switching.  It's
job is to prevent hot-switching.

 

Even without a 'sniffer' circuit, most QSK implementations use a small fast
relay on the input.  No where near capable of KW levels.  

 

From: Michael Clarson [mailto:wv2zow at gmail.com] 
Sent: Thursday, August 23, 2012 12:24 PM
To: n2bc at stny.rr.com
Cc: Mark Robinson; amps at contesting.com
Subject: Re: [Amps] Multiple Amplifier Switching Box

 

N2BC: Not sure I understand why QSK would be an issue -- if your amp is in
Standby, you should be able to run exciter through it, correct? You do have
a point -- one needs to make sure IF series amps are tried, that the bypass
around the amp can handle another amps full power and not just exciter power
levels. --Mike, WV2ZOW

On Thu, Aug 23, 2012 at 11:40 AM, N2BC <n2bc at stny.rr.com> wrote:

Amps in series....  not so good.    I would guess that most QSK amps have a
form of RF 'sniffer' on the input to prevent hot switching.

Following a massive brain cramp, I cabled a KWS-1 (600W) through a TenTec
Titan.  Was a bit confused when smoke started to curl out of the Titan & it
was powered off.   Result: charcoal grid circuit.


-----Original Message-----

 Tessco ( www.tessco.com <http://www.tessco.com/>  ) sells RG-400/U in one
foot increments. If your
> amps have built in antenna relays, have you considered hooking your
> amps in series and just switching the PTT line? --