Hello all,
While checking my K2/100 before heading off on an IOTA trip (to OC-206
in August), to my amazement, I discovered that the receiver was dead. I
have tried to resolve the problem but so far have failed to fix it.
I appeal to the very knowledgeable folks here for assistance.
Symptoms: Transmit is normal, with the KPA100 and without (QRP);
sidetone, spot and keying are normal.
Receive: Only a hiss is audible. I can very faintly hear the XG1 on
7040 kHz (RF and AF gain full). With an antenna connected, I can very
faintly hear WWVH's tones on 10 MHz. I first suspected the switching
diodes D2, D3 and D4 on the RF board but their voltages are normal as is
the 8V output of U4 on the RF board. I recently built and installed the
KNB2. I have only removed and reinstalled it. I have not removed it
and reinstalled W5. The NB display is as expected. Turning it on/off
has no noticeable effect on the receiver. This rig also has the K160RX
installed and I have removed and reinstalled it. I have gone through
the Primary and Secondary menu options and have discovered nothing that
affects the receiver.
Prior to installing the KNB2, all was well; in fact, the rig managed to
work QRPDXCC so the rx was good then.
I suspect that this is a very simple fix. Can someone help me? I won't
be surprised if I am the problem and just can't see the forest for the
trees!
Thanks in advance and 72/73,
Dan
VK8AN
K2/100 # 2469
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