REF
DES
VI
V2
v 3
v 4
v 5
V6
v 7
V8
v 9
Vl0
Vll
v 1 2
v 1 3
v 1 4
v 1 5
V16
v 1 7
V18
v 1 9
v20
Table 5- 1.
Resistance Chart
Tube MEASURED AT PIN
10K
1 3 K 0 -
-
10K
1 3 K 68 -
-
0 2.2 Meg 55K.
48K
Fil
0 2.2 Meg
22 Meg 0 Inf.
10 K
13 K
2 5 K -
-
250 K
9.2 K
2 2 K -
-
8.7 K
8 K
500 K -
-
Fil 350 K
500 K
3.3 K
N. C.
0 110K
4 5 0 K 820 1.5 Meg
7.8 K
Inf. 0 -
-
NOTE:
All measurements were made with respect to ground with the power supply disconnected from the
TR-4C. The BAND switch was on 7.0 MHz, the Mode switch was on CAL and the RCVR GAIN
and XMTR GAIN controls were fully clockwise. The VOX, ANTI VOX and SIDETONE controls
were fully clockwise and the ZERO control was set at the balance point. The accessory 34-PNB
jumper plug was in the noise blanker jack.
5 - 3
