[RTTY] RTTY Digest, Vol 37, Issue 64

[Charles Morrison]

We just have a panel of RCA jacks mounted right below the 6Pack switcher
that run to the keylines on the amplifiers.  Run the keyline patch cable
from the back of the radio and plug it into the RCA jack.  There's one jack
for all bands, it cost about 50 cents in the flea market at Dayton a few
years ago, and changeover from band to band takes about 1 second.  Unplug it
from 40meters and plug it into 80meters. 

Band changes are 2 steps, hit the button the radio, that changes the 6 pack,
and reach up and change the keyline to the correct band.  Done.

Charlie
KI5XP

 
> Message: 7
> Date: Sun, 22 Jan 2006 10:06:53 -0800
> From: Bill Turner <dezrat1242 at ispwest.com>
> Subject: Re: [RTTY] Mono band amps
> To: "'RTTY List'" <rtty at contesting.com>
> Message-ID: <7.0.0.16.2.20060122100446.02170768 at ispwest.com>
> Content-Type: text/plain; charset="us-ascii"; format=flowed
> 
> ORIGINAL MESSAGE:
> 
> At 09:41 AM 1/22/2006, Joe Subich, W4TV wrote:
> 
> >I suspect the cost of automatic
> >switching would probably eat up the cost advantage of mono band 
> >amplifiers vs. a pair of auto-tune amps.
> 
> 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
> If you mean "automatic" in the sense of RF-detection and 
> "no-hands", I would agree. A manual switching operation with 
> a single rotary switch should be easily and cheaply doable, I think.
> 
> Bill, W6WRT