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Hallicrafters FPM300 MKII Restoration Notes (Hallicrafters fpm 300 MKII恢复笔记)
Hallicrafters FPM 300 MKII Restoration Notes
W7CPA
February 5, 2014 Update, X-LOCK Changes
Since I was fortunate to acquire a working, late model MKII version from a fine Yahoo
Group Antique SSB Roundtable chap, most of the factory modifications were already
included like end of life component changes, band switches, AGC, hum etc. (see
Appendix A). I found a NOS Cinch Jones 18 pin plug on eBay so I could build a 12VDC
cable.
Figure 1 - FPM 300 MKII Front View
Figure 2 - Bottom View After Changes
The current eHam reviews of this transceiver suggest a real dog’s breakfast product. I
remember my neighbor in Chicago in 1978 sold his Kenwood twins for an early model
and he told me it was the worst decision of his life. A Yahoo Hallicrafters Group post by
a service technician says that there was a 65% return rate and many boards outsourced in
the Chicago area had major solder flow/defect problems. Why am I doing this again? I
definitely need to visit the Vintage Radio Anonymous (VRA) group after this project.
WD0GOF: “The final production of the FPM-300 MKII was done in Kansas City, Mo
which ended in 1978 at the Wilcox facility. Northrop/Wilcox sold what was left of
Hallicrafters assets in 1979 to a group in Texas. The second generation MKII was a much
better rig. In order to keep cost down the MKII used up the existing stock of 9MHZ and
VFO boards that were built in the old Hallicrafters facility. Low serial # MKIIs had a lot
of intermittent ground and solder connections.”
My manual looks like a final version with Northrop-Wilcox labels. I see they have fixed
some major errors like a missing jumper on the AC plug so this final manual would be a
good one to acquire if you are keeping your FPM 300 beastie. It was last revised August
15, 1974 by Wilcox.
The cover will not open very far with the optional cooling fan installed so it must be
removed to install the X-LOCK unit unless you have
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