[Icom] IC756 SWR meter compared with FC902 or DAIWA CN101

[Larry]

I suspect the difference lies where in the chain of events the SWR meter=20
for the 756 is located.

I bet the order of the equipment is: 756 final >> 756 SWR circuitry >> 756=
=20
tuner >> 756 antenna connector >> external SWR bridge. If that's the case,=
=20
when the 756 tuner has done it's thing, the 756 SWR circuit will see a=20
reduced SWR as a result of the 756 tuner while the external SWR bridge does=
=20
NOT see the the same thing. It sees the actual SWR that exists on the=20
coax/antenna.

73 - Larry W=D8NFU
larry_w@attbi.com



At 02:16 PM 3/21/2003 +0100, you wrote:

>Hi,
>
>I have a IC756 and building an antenna I was comparing the values provided=
=20
>by IC756 SWR meter and other meter such as the one that comes with FC902=20
>Tuner from Yaesu or DAIWA CN101 METER and I see some differences. For=20
>instance, when IC756 points out 1.5:1 the FC902 is indicating  that the=20
>SWR is 3:1. I'm quite concerned because I can not trust on the numbers=20
>provided by IC756 SWR meter and a bad mismatch with the antenna could=20
>provoke the blowing up of the PA finals.
>
>How could I adjust the SWR meter of the IC756 to be sure that I can trust=
=20
>on its values?
>
>Thanks
>
>73s Juan
>
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