[AMRadio] Antennas for AM (was Legal limit AM amplifier, homebrew)

[Brett Gazdzinski]

I have a SA2060, bought it new as a kit at Heathkit in Philadelphia.
I used it for 30 years, it took a lot of AM power without much issue, some 
cap arcing sometimes, and the roller inductor would get warm sometimes, 
mostly due to some crazy antennas.

About 10 years ago I put it on the shelf and run without any tuner since.
I get the antenna's close and don't worry about a little swr with tube 
finals.
Its only a short run of RG214 on 80 and 40 mostly, not a lot of loss....
Nothing gets hot, nothing arcs, one less thing to tune, less loss.

Brett
N2DTS



----- Original Message ----- 
From: "Rob Atkinson" <ranchorobbo at gmail.com>
To: "Discussion of AM Radio in the Amateur Service" 
<amradio at mailman.qth.net>
Sent: Sunday, November 13, 2011 8:15 PM
Subject: Re: [AMRadio] Antennas for AM (was Legal limit AM amplifier, 
homebrew)


>I got a great deal on a SA2040 last spring and got it all cleaned up
> and looking nice.  Then I read about T network tuners and found out
> they are high pass tuners; not low pass like L networks.  I want
> harmonic attenuation so it got sold at the next fest and I made a few
> bucks for the afternoon I spent making it look nice.
>
> Rob
> K5UJ
>
>
> On Sun, Nov 13, 2011 at 6:51 PM, Ronnie Hull <ronnie.hull at glowbugs.com> 
> wrote:
>> Thats why I always build AM gear to have TWICE the needed current in the
>> power supplies and use a oil filled filter if at all possible!!
>>
>> NOTHING MFJ makes will handle AM.. ....for very long..
>>
>> Two old school tuners that will hold up well are the Drake MN2000 and the
>> Heathkit SA series.
>>
>> Ronnie - W5SUM
>>