In article ,
"Mike Andrews" wrote:

Some friends and I have been looking into making antennas for 70 cm.
and higher frequencies, but we don't have an MFJ-269; my MFJ-259 tops
out at 175 MHz. I _do_, however, have an SWR meter that supposedly
works up to 500 MHz( and maybe higher), and an HP 8640B that is good
to about 1.2 GHz.

If the SWR meter is sensitive enough, could I get at least ballpark
SWR values using the 8640B as a source, running the signal through
the SWR meter to the antenna? Or am I way off in left field?

Mike-

I think you are on the right track with the RF log-amps.

Another idea - I understand the MFJ-259 has a standard SWR configuration
with a built-in signal source that uses an ALC to keep forward power at
the equivalent of full scale. Why not replace the 259 signal source
with the HP 8640B?

Fred
K4DII