[Amps] Kenwood TL-922A on 17 meters

[Carl]

Im not familiar with any resonant around 18 mHz but several such as many 
Dentrons that use the same choke, and the NCL-2000 will fry on 12M. 
Removing 3-4 turns moves the resonance up near the CB band.

The parasitic suppressors have no effect at 10M and below; the parasitic 
frequencies are in the VHF range.

Carl
KM1H



----- Original Message ----- 
From: "Hardy Landskov" <n7rt at cox.net>
To: "Steve Sala" <k7awb at msn.com>; <amps at contesting.com>
Sent: Thursday, September 24, 2009 7:50 PM
Subject: Re: [Amps] Kenwood TL-922A on 17 meters


> Be very careful when trying to use standard amps that were not designed 
> for
> WARC bands. The plate choke is series resonant around 18 MHz in many amps.
> I'm not sure the TL-922 configuration but you may apply 18 MHz energy and
> the amp will make a noise like a cherry bomb just went off. And you know
> what that means.......
> Hardy N7RT
>
> ----- Original Message ----- 
> From: "Steve Sala" <k7awb at msn.com>
> To: <amps at contesting.com>
> Sent: Thursday, September 24, 2009 4:20 PM
> Subject: [Amps] Kenwood TL-922A on 17 meters
>
>
>> What do I have to to use the amplifier on 17 meters?  I suspect that one
>> uses the 21 MHz position since that is closer to 18 MHz than 14 MHz?  Can
>> the parasitic chokes take the frequencies?
>>
>> Steve
>> K7AWB
>> Nine Mile Falls, WA
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