: TM-421 SPECIAL DUMP RESISTOR EFFECTS                  by DF9WK

: No.   Mod. Resistors	RX Range 	TX Range  	FS  SHIFT Preset.	Tone
:             22 23 24 25   	[MHz]    	[MHz]       [MHz]      	[MHz]      	[Hz]
:                                                                         
: (1)    J   o  o  x  o   	430-440  	430-440  	A   +/-5.0    433.000     88.5 
:  2          o  o  x  x   	200-500  	430-440  	A   +/-5.0    433.000     88.5
: (3)    K  o  x  o  o   	438-450 	438-450  	B   +/-5.0    440.000     88.5
:  4          o  x  o  x   	440-450  	440-450  	B   +/-5.0    440.000     88.5
: (5)    M o  x  x  o   	430-440  	430-440  	B   +/-5.0    430.000     88.5
:  6          o  x  x  x   	450-460  	450-460  	B   +/-5.0    450.000     88.5
:  7          x  o  o  o   	460-470  	460-470  	B   +/-5.0    460.000     88.5
:  8          x  o  o  x   	200-500  	200-500  	B   +/-5.0    440.000     88.5
: (9)    W x  o  x  o   	430-440  	430-440  	B   -1.6/7.6  430.000    1750
: 10         x  o  x  x   	432-438  	432-438  	B   +/-1.6    432.000    1750
:(11)    T x  x  o  o   	430-440  	430-440  	B   +/-1.6    430.000   *1750*
:                                                                           :
: 12          x  x  o  x        430-450         430-450         B   +/-5.0    440.000     88.5 :
:                                                                           :
: 13          o  o  o  o     same as No.1        first IF is 21.6 MHz       :
: 14          o  o  o  x     same as No.2        first IF is 21.6 MHz       :

o = used   1 = not used
A = 5/10/125/15/(20)/25 Khz Steps  
B = 5/10/12.5/15/20/25 Khz Steps
FS = Frequency Steps
*1750* = 1750 Hz-Tone only for 500 milli-seconds

Resistors R22,23,24 & 25 can be found on the rear of the main display board.