I¡¯ve seen this problem more than once. Some relay from the harmonic filter
is stuck. In your case probably one for 10 meter band.
Note that is the band it work better, 90 W. Because of it the other bands RF
are forced to go through wrong coils and cap?s.
73 good luck
Ivan
_____
From: ic7000@... [mailto:ic7000@...] On Behalf Of
George
Sent: quinta-feira, 20 de dezembro de 2012 15:42
To: ic7000@...
Subject: [IC-7000] Strange issues with output power
Hi All.
I have had an Icom IC-7000 for over a year now, having bought it second
hand. Today I went to use the for a few SSB QSOs on 20 metres when I
realised I couldn't get more than 40 watts out.
Initially I thought that the PA amp may be at fault, but after playing
around some more, I learned that the power I get varies wildly with band.
Setting the radio to 100% power out, I get the following measured powers
with a Bird Thruline into a dummy load:
- 160 metres, 1 watt.
- 80 metres, 1 watt.
- 40 meters, 10 watts.
- 20 metres, 40 watts.
- 12 metres, 60 watts.
- 10 metres, 90 watts.
- 6 metres, 30 watts.
- 2 metres, 49 watts (fine).
- 70 cms, 37 watts (fine).
It seems the issues are in the HF PA, i.e. anything on Antenna 1. I'm not
sure what the issue is. I think something like a capacitor gone down, or a
relay stuck? I'm not sure.
Any help would be greatly received.
Thanks in advance.
George Smart, M1GEO.
[Non-text portions of this message have been removed]
