On an intermittent basis my Orion sub-receiver will display approximately
?five bars? of noise while the main receiver may show S-2. Both receivers
are on 20m at present.
If I tune the sub-receiver down to 13.000.000 the ?five bars? of noise is
still displayed and the hash is still heard in the sub-receiver. If I tune
to 12.999.900 the ?five bars? of hash drops entirely and a more reasonable
1-1/2 bars of ?normal? background hiss is heard.
The sub-receiver noise at 13.000.000 and above sounds something like a
mixture of high and low tones that are cycling, burbling and/or pulsing at a
rapid rate. Sorry I don?t have a more technical description for this noise!
Tuning to 12.999.900 and below the hash disappears and I hear the ?normal?
background hiss of a quiet band.
If the sub-receiver is above 13.000.000 and I cycle the main power switch
off / on the condition persists. If I tune to 12.999.990 and cycle the
power the condition is ?cured? but a noticeable ?pop? is heard when rolling
from 12.999.900 to 13.000.00 however the sub-receiver hash is gone.
When the sub-receiver noise is present the rig is not useable for split
operation but the ?cure? at least is available. I?m running the latest
firmware.
These observations will be cross-posted to ?ditsnbits? but I though I?d
mention it to the group.
Thanks very much,
TJ Sheffield, KL7TS
Anchorage, Alaska
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