[RTTY] What should I expect from 3db improvement in SNR?

[Rudy Bakalov]

I am actually thinking of an amp that is currently available as an import from Germany- http://www.alpinamplifier.com/  

It is based on the tried and tested RF deck used by Alpha and Acom, but with beefier power supply, much more cooling, and better price.  There is a very positive review from CQ DL (in German) and I understand that the RSGB's Radcom magazine will also have their review published in the upcoming April issue.


Rudy N2WQ
--- On Wed, 2/16/11, WS7I <ws7ik7tj at gmail.com> wrote:

> From: WS7I <ws7ik7tj at gmail.com>
> Subject: Re: [RTTY] What should I expect from 3db improvement in SNR?
> To: "Dick Flanagan" <dick at k7vc.com>
> Cc: "RTTY Reflector" <rtty at contesting.com>
> Date: Wednesday, February 16, 2011, 5:19 PM
> All I can echo here is that you need
> AIR, AIR, in the RF Deck in
> places they don't ever think about.  Like the solder
> melting out of a
> Henry tuning section. (Fixed that with more FANS.
> 
> Most Amp's even Alpha's require more AIR.  I recall an
> ARRL National
> where the old Alpha guys booth was next to Bill Henry of
> Hal
> Communications booth. I told him I saw where the Ad had the
> brick on
> the key.  Told him I was a RTTY Contester and he
> quickly told me all
> about the extra add-on option for fan's!!
> 
> In fact I was just looking at a friends AL-1500 which is
> what we used
> to run at W5KFT's (The Ranch).  They have increased
> the holes in the
> top of recent AL-1200/1500's to much larger surface area.
> 
> We always ran additional fans on the AL-1500's and they
> certainly went
> 1500 out for the 48 hour tests.  Same with the
> AL-1200's.  I gave my
> last monster fan to Wayne WA1PMA for his new AL-1200.
> 
> 
> 
> On Wed, Feb 16, 2011 at 1:40 PM, Dick Flanagan <dick at k7vc.com>
> wrote:
> > At 08:05 AM 2/16/2011, N2WQ wrote:
> >  >So, my question is what should I expect from
> doubling my power from
> > 750 to 1500W?
> >
> > A lot of heat and stress on whatever amplifier you
> choose.  Few amps
> > can handle a weekend of RTTY at 1500 watts.  Look at
> the heavy
> > lifters; Alpha or Acom.
> >
> > Dick
> > --
> > Dick Flanagan K7VC
> > dick at k7vc.com
> >
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