[Amps] Tube Amps as Antenna Tuners

[Carl]

I do the same with a LK-500ZC even on 160 with SWR up to around 5:1. Changed 
a few fixed padder values to keep the grid current in a safe range, and its 
running the original 1986 Eimacs, and bandswitch which has never arced. I 
dont even own an ATU

Carl
KM1H


----- Original Message ----- 
From: "Pete Smith" <n4zr at contesting.com>
To: <amps at contesting.com>
Sent: Wednesday, January 26, 2011 5:05 PM
Subject: [Amps] Tube Amps as Antenna Tuners


> I'm really spoiled by my SB-220 -- I can use my 80m antennas that are
> cut for the CW end all the way up to 3.9 MHz at least (with indicated
> SWR over 3:1) just by tuning for maximum out.  Same on 40.  I understand
> that few if any modern amps have this wide a tuning range, unless they
> incorporate an auto antenna tuner as I think the Acom 2000A does.
>
> Are there any exceptions?  For example, will any of the Ameritron tube
> amps handle this situation?
>
> 73, Pete N4ZR
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