[CQ-Contest] Pre tuned Hf amps

Tim Duffy K3LR k3lr at k3lr.com
Sun Sep 24 17:09:13 EDT 2006

Hi Peter!

USA Multi Multi stations W3LPL and K3LR are using home-brew mono band
amplifiers. LPL uses a single 3-1000Z in each amp and LR uses a single 8877.
These amps are not remote and sit close to the radio. They also need to be tuned
between CW and Phone.

Mono band amplifiers are very easy to build and as long as you have antennas
with similar VSWRs there is no reason to touch the amplifier during the contest.
They work quite well!

You can see pictures of the K3LR amplifiers at http://www.k3lr.com

Tim K3LR

Peter wrote:

> Hi
> I'am looking for some information to put an hf amp in an other room
> I thinking to build monoband amps who are pre tuned and no need to
> retune if you go from ssb part to the cw part of the band.
> Has any one done ths before?
> How do you make the protection/feedback to the operator if something
> goes wrong?
> peter
> PC2A
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