[Amps] Antenna tuner loss

[Carl]

I guess mine was before yours. I was in AF Mars while in HS and scrapped a 
pair of BC-610's plus got other parts to build PP 250TH's with 810 
modulators driven by a Johnson Viking I. This was in 1957 and sold it all in 
63 when I left the Navy and moved to MA and National Radio.

Shortly after that was built I had a HB W2EWL, 10A, and 10B  into various 
small monoband amps and eventually a HT-37 into GG 4-400A's followed by a 
much more compact NCL-2000 which is still in use at a vintage station clone 
here.

Since my later primary interests were DX and contesting a big HB amp didnt 
fit the requirements so store bought was the only way to get it all in one 
small package for quick QSY and band changing.

My VHF thru microwave amps are all HB or modified surplus which takes up a 
lot of space.

Now with the boatanchors and HB AM amps adding to the mess Im just about 
saturated and have started thinning the herd.

Carl
KM1H




----- Original Message ----- 
From: "Bill Fuqua" <wlfuqu00 at uky.edu>
To: "Rob Atkinson" <ranchorobbo at gmail.com>
Cc: <w2xj at w2xj.net>; "AMPS" <amps at contesting.com>
Sent: Sunday, May 06, 2012 12:42 AM
Subject: Re: [Amps] Antenna tuner loss


> BC610 had a unshielded adjustable link.
> I used to have a HT-4 when I was a teenager.
> I scrapped it to make an amplifier.
> At one time I ran 2x 250TH in grounded grid driven by a pair of
> 6146Bs with a 20A exciter.
>   73
> Bill wa4lav
> PS now I wish I still had the HT-4.
>
> At 05:59 AM 5/5/2012 -0500, Rob Atkinson wrote:
>>Because not everyone operates an appliance box from Alpha, Ameritron
>>etc.  or some plastic JA box.  Some hams operate rigs with swing link
>>networks like the BC610 (okay the link on that one rotates) which is
>>notorious for 80 m. harmonic on 160.  Then there are homebrew rigs,
>>and just about anything else built before the  pi-network became
>>common.
>>Extra harmonic attenuation never hurt anyone, especially plug and play
>>hams using multiband antennas and all solid state plastic radios and
>>PAs.
>>
>>73
>>
>>Rob
>>K5UJ
>>
>>On Fri, May 4, 2012 at 11:54 PM, Bill Fuqua <wlfuqu00 at uky.edu> wrote:
>>
>> >   Now, saying that, I assume your amplifier or transmitter has low
>> > harmonic output in the first place. So, why worry so much about
>> > the "HI Pass" or "Low Pass"  characteristics in the first place.
>> >   73
>> > bill wa4lav
>
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