Hello group,
while the subject of SLMs is hot, I am here asking if someone of you
has some experience in fixing the W&G SPM6.
My unit worked ok up to a couple of weeks ago, then suddenly the
measuring portion of the instrument gave forfeit.
The RX portion is still working, and this is demonstrated by the presence
of audio at the rear connector near the switch for AM, LSB, USB
The front panel dBm selector works ok, this can be judged by the
reproduced audio (I have an amplified speaker wired to the rear connector),
while the analog meter hovers near the the beginning of its scale, instead
of showing the correct level.
I don't use this unit as a receiver, the LO is too unstable for this, al
least
for QRSS, but it was an useful, though bulky, instrument in my lab.
I don't have any manuals or schematic of it. If someone can indicate
the approximate area where the fault probably has developed, please
contact me, here or privately. Many thanks in advance.
73 Alberto I2PHD
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