"Harold E. Johnson" wrote in message
news:_fwlc.22193$kh4.1279179@attbi_s52...


What could I be doing wrong? (My other POS-900W's do the same).
Incidenatlly, I have a screenshot (23Kb) of the display which I can
e-mail.

Well, you don't specify the frequency coverage of your other VCO's, MCL's
have a very high MHz/volt tuning rate and unless the tuning voltage is
absolutely quiet, they'll look pretty bad. (BOTH the positive AND the
negative leads shielded to ground?)

W4ZCB




Thank you for the reply.

But surely if the Minicircuits datasheet says the trace will fall to less
than -75dBC at 1,000Hz away I should see that, or something close to it?
Irrespective of the frequency (800MHz)?

Even if the conections aren't ideal, I'd expect 10dB or so more noise, but
it doesn't change however good/bad it's shielded.

I'm probably doing something really stupid.

Al.
---