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Re: [TowerTalk] wire antenna question

To: Drax Felton <>
Subject: Re: [TowerTalk] wire antenna question
From: "Roger (K8RI)" <>
Date: Sun, 09 Nov 2008 18:37:41 -0500
List-post: <">>
Drax Felton wrote:
> I ran my 1.5kw amp into a kilowatt capable antenna tuner then into wire
> antennas all the time.
> Your SWR is only going to be perfect 1:1 on one specific frequency only.
> Jumping 0.3 SWR across any band is within normal for any wire antenna.
> Consider installing a high power tuner after the amp.

What with the advent of the autotuners the prices on used, manual tuners 
all the way up to the legal limit capability isn't all that bad.
I have a pair of MFJ-989C tuners (one I picked up in trade) with one set 
for where I operate on 75 and the other on 40 so with two outputs on the 
amp and two on the transceiver they are literally instant band change

73 and good luck,

Roger (K8RI).
> -----Original Message-----
> OTOH with a solid state rig it's a good idea to get it below 2:1.
> My 756 Pro will operate pretty much the entire 40 meter band with the 
> internal tuner. However the solid state amp (Tokyo Hy-Power HL-1.5Kfx) 
> shows a substantial power drop with 1.2:1 compared to 1:1.  At 1:1 it 
> runs 1 KW out. At 1.2:1 it is down to a bit above 800 watts. At 1.3:1 
> the reflected power will start tripping the protective circuitry.


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