Subject: STANDARD RADIO C-628A 440 / 1200 MHz Radio Modifications (Many thanks to JI1AZI, Kazumi Nakagawa,
for translation assistance) Receive Expansion Mod:Expands RX coverage
To: 320 - 480 MHZ 820 - 980 MHz 1220 -
1400 MHz 1 Reset Radio by pressing the small indentation on RHS of radio 2 Press "450" key 3 Press Funct
and 0 (Set) 4 Press Funct and D (Ent) 5 Press the PTT switch 6 Press "1200" key 7 Press Funct and L
(Lamp) 8 Press Funct and 0 (Set) 9 Press Funct and B (Code) 10 Press Funct and L (Lamp) 11 Press Funct
and 3 (PO) 12 Press the PTT switch This completes the RX expansion mod To select the frequency ranges
within a band, press Funct and 0, then Funct and 3 The 440 MHZ band will alternate with the 320 MHz band On
the 1200 MHz band, the ranges will cycle 1200, 1300, 800, 900 then back to 1200 MHz Now, for the TX
expansion mod This should be done after the RX mod has been performed 1 Press "1200" key 2 Press Funct
and B (Code) 3 Press 5 (Save) 4 Press 2 (Dual) 5 Press 0 (Set) 6 Press "450" key 7 Press Funct and B
(Code) 8 Turn Rotary Channel Selector Knob to Ch #3 9 Press 6 (Step) 10 Press 2 (Dual) 11 Press 0 (Set)
12 Press Funct and 4 (FL/DM) 13 Press Funct and "450" key 14 Press Funct and 0 (Set) 15 Press Funct and D
(Ent) 16 Press the PTT switch When properly completed, this will expand the TX coverage to 400 - 474 MHz and
1220 - 1340 MHz I tried this on a C628A, and it works as shown Ed Brown KB1MZ
Source QRZ: The Windows Ham Radio CDROM |
