|[AMRadio] one way to test a modulation monitor -- |
wa3vjb at yahoo.com
Mon Jul 24 14:33:42 EDT 2006
Rev. Chrysafis has posted a different model of
modulaion monitor elsewhere and provided this rundown
of his review process.
I have a Belar AMM-1 and RFA-2 Set Available. I have
done a visual
inspection of the items inside and out. they are in
great condition inside
and out. I have replaced the HP style oval AC Jacks
with the new "D" Style 3
pin Computer Jacks. the job was done nice and neat. I
bench tested the AMM-1
Modulation function using a Radio Shack 70's Era
Navaho Base Station. it was
indicating about 90% neg. mod., positive mod. was over
typical for a CB Radio. (no hillbilly jokes please).
the RFA-2,i powered on
and checked various points on the board for voltage
indication. it seems
functional. no smoke or burned parts anywhere. the
RFA-2 is on 920khz., the
calibration stickers show a 1995 calibration date. the
RFA-2 has a sticker
on the rear that says do not short center of RF in to
ground. i'm assuming
this has the 15v phantom power option to use with
LP-1a Loop Antenna. I used
my meter to test for 15vdc on the rf-in and got no
idication of voltage on
the jack. I can supply pic's of both units on request.
i can take pic's of
any angle. I'm looking to get $600.00 Shipped Con-US.
will need calibration.
Rev. Robert P. Chrysafis
Universal Life Ministries (ULC)
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
More information about the AMRadio mailing list
This page last updated 11 Dec 2017.