I recently bought a FG503 at a hamfest that was in non working condition.
The serial number of this unit is in the high range.
The parts layout agrees with the low range parts layout.
The board does not appear to have been changed.
Would it be common to have this disagreement with serial numbers?
Another question is U241.
It is listed as 74S00 or 74S02 depending on serial number range.
Why would this part be changed?
The sockets are TI and I plan to change them to high quality sockets due to the problems reported with the TI sockets.
Any comments about the above before I dive into this unit?
Any words of wisdom?
Thanks
Glenn
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Glenn Little ARRL Technical Specialist QCWA LM 28417
Amateur Callsign: WB4UIVwb4uiv@... AMSAT LM 2178
QTH: Goose Creek, SC USA (EM92xx) USSVI, FRA, NRA-LM ARRL TAPR
"It is not the class of license that the Amateur holds but the class
of the Amateur that holds the license"
