DRAKE TR-4CW - Page 32

DRAKE
Table 5—1. Resistance Chart
REF Tube MEASURED AT PIN
DES | Type 1 | 2 i 3 a | 5 6 [ 7 s | 9
Vil 6EA8 | 9.5K |2.5Meg} 20K! 0 Fil 96K 220 220 150K
V2 |12AV6 |3.3Meg! Inf. Fil QO | 150K] 150K | 350K pee acl
V3 6EA8 | 8.0K ! 150K | 250K | Fil 0 11K | 2.2K 1K 34K
v4 6EJ7 25K | 660K | 23K | Fil 0 0 11K | 9.5K 0
V5 6BZ6 lMeg)] 1K Fil 0 | 350K] 125K 1K — ges
Vo |12BY7A| 25K | 67K 0 0 0 Fil 85K} 25K 0
T
V7 | 12BA6 | 2.8 Meg 0 Fil 0 11K] 10K 100 aa 2
V8 6JB6 8.2K | 40K | 23K | Fil Fil 40K | 82K 0 23K
v9 6JB6 82K | 40K |) 23K] Fil Fil 40K | 82K 0 23K
V10 | 6JB6 82K | 40K} 23K | Fil Fil 40K | 8.2K 0 23K
Vil | 6BZ6 | 2.5 Meg] 150 0 Fil 10K} 13K 0 = a
V12 |12BA6 | 2.5 Meg 0 Fil Oo | 10K/ 13K] 68 | — =
V13 | 12AX7 1Meg) 22K | 45K | O QO |2.2Meg| SSK] 48K Fil
V14 | 13DE7 8K | 2.5 Meg|2.5 Meg] Fil | 0 |2.2Meg| 22Meg|__0 Inf.
V15 | 12BA6 2 Meg 0 0 Fil| 10K] 13K | 25K ee =
V16 | 6GX6 | 2.2 Meg 1K 0 Fil | 250K | 9.2K | 22K nae =
V17 | 6AQ5 } 500K |} 270 0 Fil | 8.7K 8K | 500K = =
V18 |12AX7 | 350K | 6.8 Meg 0) 0 Fil | 350K | 500K | 3.3K | N.C.
V19 | 6FQ7 12K |4.5 Meg 0 Fil ) 100K | 620K 820 | 1.6 Meg
v20 | OA2 18K 0 Inf 0 | 78K Inf, ) = =
REF Transistor MEASURED AT:
DES Type | Emitter | Base | Collector
Ol 2N5950 Located in PTO
| 92 | 2N3563 | Located in PTO
Q3_| ATS5059 0 | 56K | 43K
Q4 | 2N3394 o | 750 | 11K
QS | 2N3877 1K | 56K | 6.8 K
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.