[1000mp] Mark V power on 10 meters

Fri, 8 Mar 2002 09:46:32 -0500

Hello John.....

Generally, from what input I have received from other Mark V owners, the
output has been lower on 10 meters, not higher....

My personal rig develops now about 200 watts on the lower frequencies, and
drops to about 175 watts on ten meters....I did have some problems with the
"automatic antenna tuner", which inhibited the power output in the
radio.....I now force the tuner to adjust in CW only, until the SWR meter no
longer flickers while transmitting....

Of course there are differences between meters, and 10% accuracy is pretty
standard stuff for both instruments, so the combined error could reach as
high as 20%....Naturally, even if your Model 43 is accurate, cables can be a
problem also, and should not be discounted as a possible source of mismatch,
generally, keep them as short as possible, or better yet, attach the coupler
directly to the Mark V......this is especially true the higher in frequency
you go....you didn't mention what SWR you achieved for each
measurement.....on the Mark V SWR meter....

Preferably, I would force the antenna tuner to match into your dummy load,
with the model 43 in the line....Make sure that the tuner achieves a 1:1
match before making the measurements....If the tuner will not achieve 1:1,
clear the tuner preset memories, and try again...This is done by pressing
the two outside bottom buttons of the keypad, while powering up the
radio....it will also clear any memories of frequencies you may have stored,
but will not change any of your transceiver menu settings.....

With things matched up, and with good cables and dummy load,  what is the
comparison between the model 43 and the Mark V?....It may be a little closer
than before....

Happy DXing and 73,

Mike Schatzberg
WB2AJI
http://www.qsl.net/vu2wap/wb2aji/
----- Original Message -----
From: "John L Merrill" <[email protected]>
To: <[email protected]>
Sent: Friday, March 08, 2002 6:35 AM
Subject: RE: [1000mp] Mark V power on 10 meters

> I forgot to mention that there is a constant 25 or so watt difference at
any
> power level using a Bird 43....at 100w on the radio the Bird reads 125w,
> etc. Probably no big deal, but I thought it was odd that ten meters was
the
> only band that was significantly different.
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]On Behalf Of Tom Rauch
> Sent: Friday, March 08, 2002 4:46 AM
> To: [email protected]
> Subject: Re: [1000mp] Mark V power on 10 meters
>
>
> > My new Mark V puts out 225watts or so on 10 meters even though the
> > meter on the radio says 200. The other bands are ok compared to my
> > external wattmeter into a dummy load. Is there an adjustment for 10
> > meters only or is this one of those Mark V abnormalties?
>
> What type of external meter are you using for a reference and what
> is the tolerance of that meter?
>
> Maybe the FT1000MKV meter is right, and your reference meter is
> wrong. Probably it is a bit of both.
>
> 10% error isn't much when measuring RF power!!
> 73, Tom W8JI
> [email protected]
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