[ICOM] IC-746 High Indicated SWR on 6 Meters

[Charles L. Word]

Mac, remove your low pass filter from the back of the radio or amplifier.
6M id a dead short (RF) at 50MHZ.

Larry W4UAT

-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net]On
Behalf Of D C (Mac) Macdonald
Sent: Sunday, February 05, 2006 7:27 AM
To: icom at mailman.qth.net
Subject: [ICOM] IC-746 High Indicated SWR on 6 Meters

For some reason, the SWR function (and attendant
PA fold-back) seems to be wacko on my IC-746.  I
first thought I had an antenna problem, but that
proved not to be the case.  I have checked reflected
at ends of coax attached to antenna, the jumper to
an entry patch panel, jumper from that panel to a
coax antenna switch inside, coax from that switch
to the connector going to the transceiver, and  ALL
show VERY low reflected power.

When trying to transmit, SWR bar-graph on the 746
shows maximum.

Anybody have an idea or two as to possible cause?
The setup had previously worked just fine.

TIA & 73,

Mac, K2GKK/5
Oklahoma City, OK


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