[TenTec] Solid State Amps

[Ron Castro]

In the case of solid state, there is not much choice other than no-tune 
since the outputs can be easily broad-band matched to 50 Ohms and they 
generally use fixed low-pass filters for harmonic rejection.  Auto tuning is 
only to match a non-50 +j0 Ohm load, which can be done internally or 
externally, auto or manual, just like in transceivers.

Ron N6AHA


----- Original Message ----- 
From: "Wes Attaway (N5WA)" <wesattaway at bellsouth.net>
To: "'Discussion of Ten-Tec Equipment'" <tentec at contesting.com>
Sent: Sunday, July 16, 2006 7:28 PM
Subject: Re: [TenTec] Solid State Amps


>I think the no-tune amps make a lot of sense for SO2R and other
> multi-radio and multi-band contesters.  Outside of that
> application a no-tune amp is just "nice" but not really
> essential.  Lots of people will pay for "nice", "easy", "latest",
> etc.
>
> -----Original Message-----
> From: tentec-bounces at contesting.com
> [mailto:tentec-bounces at contesting.com] On Behalf Of Rob Atkinson,
> K5UJ
> Sent: Sunday, July 16, 2006 6:27 PM
> To: tentec at contesting.com
> Subject: [TenTec] Solid State Amps
>
> I'm not sure how many hams want a no-tune amp--tuning a tube
> plate to low Z
> doesn't really bother me that much, in fact I prefer to do it
> myself, not
> trusting some logic circuit to tune and load for me.  however I
> know one of
> the great things about the PW-1 is that it follows the icom
> exciters making
> them 1 kw transceivers which I must admit is pretty nice.   Also,
> it's
> easier to remote the amp when it's no-tune.   But I think a lot
> of hams make
> buying decisions based primarily on the purchase cost.   Since
> they aren't
> transmitting around the clock every day of the year, operating
> costs aren't
> that much of a consideration.    If I transmitted all the time, a
> 90%
> efficient s.s. tx would be attractive to me.  So, in other words,
> I
> understand the broadcast industry moving to s.s. but their
> reasons mostly do
> not apply to hams, at least for now.   If a s.s. 1.5 kw ham amp
> or even a 1
> kw ham amp can hit the $3K mark, then things will change.
>
> re the SGC, I did not know about the IMD problem.  Ron, do you
> know how the
> PW-1 does in that department?  it has a reputation for being a
> pretty robust
> s.s. amp--i heard the 1 kw pep spec is conservative.
>
> 73
>
> rob / k5uj
>
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