Re: Poor quality SRF59s - can they be aligned ?
Hi Again Huelbe,
Please don't worry about English here-- if I had
to write in Portuguese, it would be a true disaster.
The SRF-59 (and SRF-39FP) loopstick does have
both a larger and smaller coil, but only the smaller (movable) coil is necessary
for alignment adjustment. The larger (fixed) coil is glued in place, and
is not designed to be moved at all.
For alignment, remove all wax bonding the smaller
coil to the ferrite bar, and tune in a signal around 600 kHz on the low end of
the band. Using a wooden probe, move the smaller coil about 5 mm either
way from its original position, to find the spot of maximum signal reception of
the 600 kHz station. After finding this spot, either glue the coil in this
position (if it has corrected the radio's sensitivity problem) or proceed to
adjust the upper left trimmer capacitor on the tuner to peak a 1400 kHz signal
(for full alignment). My own alignment procedure is to peak both
adjustments repeatedly, until no further improvement is gained. Then, I
glue the loopstick's smaller coil in the peak position, and reassemble the
radio.
The alignment procedure usually gives a big boost
in SRF-59 sensitivity, and should be considered by all owners to ensure maximum
DX performance.
73, Gary DeBock Create a Home Theater Like the Pros. Watch the video on AOL Home.
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