View source

Kenwood TK-981 / TK981 information

Kenwood TK-981

Use KPG49d to program

RX Filter:  920-950mhz
RX VCO: 925-950mhz
TX VCO: 880-950mhz

The RX filter is fixed (not varactor tuned like the TK-780).


FCC 1 = TX 896.0125
FCC 399 = TX 900.9875
default max deviation = 63 "2.5 khz" (2.2 khz)
                        71 low
                       100 (.2 khz)
                       135 (1 khz)
                       150 (.4 khz)
                       199 high
                       200 (3.2 khz)
                       207 high
                       209 high
                       213 high dev - past passband
                       215 past passband
                       223 (6.8 khz)
                       230 (6.2 khz)
                       231 (6 khz)  (high!)
                       239 high
                       256 (8 khz)
 - set to 212 (2.8khz)
default squelch = 135  volume 9   - (113-122/124 = open) changed to 125 

350: ff ff 01  50 12 50 93  50 12 60 89  32 32     1  t: 896.0125 r: 935.0125
350: ff ff 01  00 25 50 93  00 25 60 89  33 33     2  t: 896.025  r: 935.025 

370: ff ff 02  00 75 99 93  00 75 09 90  33 33   398  t: 900.975  r: 939.975
370: ff ff 02  50 87 99 93  50 87 09 90  32 32   399  t: 900.9875 r: 939.9875
                                         ^^ ^^
After programming, while making hex-edit changes for ham band,
change "33 33" to "32 32" !!!  Otherwise TX will be off freq +20kc or -40kc !!!