FRA-7700 and FRT-7700 Modifications
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FRA-7700: From Active Antenna to Preselector
FRT-7700: Functional Modifications
Note that the "Antenna" switch is now an "ANT or GND" switch and the "Out" switch is now an "Attenuator Bypass" switch.
Perform these modifications at your own risk. Changing, modifying, or altering any product, in any way, may invalidate any warranties, and/or cause refusal
of repair. These data are presented here for informational and archival purposes only and do not guarantee any specific performance or operational standards.
The author cannot be responsible for others' craftsmanship or workmanship.
Never work on "LIVE" circutry.
Always disconnect/unplug all equipment before opening the case or attempting to work on internal circuitry.
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