And a great source for those two tones is an Elecraft 2T-Gen!
Brian - W6FVI
[EMAIL PROTECTED] wrote:
In a message dated 2/14/06 6:54:20 PM Eastern Standard Time,
[EMAIL PROTECTED] writes:
Does anyone know how to test an amplifier, or for that matter a
transceiver,
for close
in IMD products? What kind of equipment is needed?
That's what a "two-tone" test is for.
The RUT (Rig Under Test) is set up for SSB operation, and two pure sinewave
nonharmonically related audio tones in the audio passband are fed into it.
Output is examined with a spectrum analyzer.
A perfect rig would emit two carriers and nothing else. Imperfections
(odd-order IMD products) show up as carriers besides the two desired ones.
73 de Jim, N2EY
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