[RTTY] Mono band amps

[Charles Morrison]

Its how we've been doing it at W5WMU for quite some time now.  All tuned for
the correct portion of the band, all located in a separate room.

Charlie
KI5XP


> 
> Message: 2
> Date: Sun, 22 Jan 2006 09:17:42 -0800
> From: Bill Turner <dezrat1242 at ispwest.com>
> Subject: [RTTY] Mono band amps
> To: cq-contest at contesting.com, "RTTY List" <rtty at contesting.com>
> Message-ID: <7.0.0.16.2.20060122085752.02283ac0 at ispwest.com>
> Content-Type: text/plain; charset="us-ascii"; format=flowed
> 
> Wondering... For those who like to change bands a lot.
> 
> Rather than spend between five and ten thousand dollars for 
> an auto-tune amp like the 87a or similar, why not build 
> separate amps for each band and switch them? You wouldn't 
> need auto-tune or even manual tune since they would already 
> be tuned. Also, SO2R would be a natural since no additional 
> amp would have to be purchased.
> 
> The Russian GS-35b is so inexpensive these days it seems to 
> make sense to me. One power supply could run them all (for 
> single ops where only one TX is allowed at one time) and just 
> switch to the one you need. Fan noise might be an issue if 
> all five were left running, so a pair of 3-500s or some other 
> instant-on tube could be used instead. That expensive 
> bandswitch would be eliminated, although you would need to 
> switch the input and output coax, easily done with inexpensive relays.
> 
> This might be a good business opportunity for an enterprising 
> ham to make and sell them.
> 
> Anyway, just an idle thought. It would seem to be much 
> cheaper but I don't recall this approach being discussed before.
> 
> Bill, W6WRT
> 
> 
> 
>