[1000mp] SWR Meter and FT-1000MP

Sun, 10 Mar 2002 19:26:45 -0500

The external meter is reading reflected power from the dummyload since that
is the last thing connected to it.  The internal meter is reading  power
reflected back from everything after it; linear, switch box, all cables &
connectors, etc.  at low power the reflected power is so minuscule that it
is hardly readable, however as the forward power increases so does the
reflected power.   The difference that you are seeing is not worth bothering
with.  The external meter has an accuracy of +/- 10%.  Both meters are not a
scientific measuring devices but just reference gauges to be glanced at
while operating to be sure that nothing drastic is wrong.
73
Norm, W3IZ
----- Original Message -----
From: "Pawel, SP7PS" <[email protected]>
To: "YAESU Reflector" <[email protected]>; "FT-1000MP Reflector"
<[email protected]>
Sent: Sunday, March 10, 2002 6:56 PM
Subject: [1000mp] SWR Meter and FT-1000MP


> Hello FT-1000MP Users,
>
> Because I have problem with one of my antennas I wanted to check, if the
RF
> cables between my MP, FL-7000, external SWR Meter and antenna box are
right.
> I put 50 Ohm dummy load instead of antenna and made a test. And it was a
big
> surprise for me to see difference between MP's SWR and external YAESU
YS-60
> SWR meter. First I tried with 50 Watts and external SWR meters shows 1:1.
> But MP shows 1:1.3. So I increase the power to 100 Watts and external SWR
> meter still shows 1:1.0, but internal rised to 1:1.7. Is that something
> wrong with my MP?
>
> What is your opinion or suggestion?
>
> Best 73's
> Pawel, SP7PS
> SN7N in contests
>
>
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