[ARC5] RBB-6 Questions
Mark K3MSB
mark.k3msb at gmail.com
Wed Mar 13 23:05:02 EDT 2019
Hello Gang
I'm working on my RBB-6 and am using NAVSHIPS 91469 dated 2 July 1951.
I have two questions.
Question #1:
In Figure 7-29 "RBB-Oscillator Box, Connection diagram" should E122 be
E-119 as shown in FIgure 7-11 "RBB Terminal Board Identification" ?
Measuring from (what I think should be) E-119 Terminal 3 to V103-6 gives me
the expected reading for R115 + R126.
Question #2:
Tube Socket Resistances Table 7-9.
I'm getting very different readings for V308 Pins 4,5,6, and 8.
For example, Pin5 in the MOD position: my manual says 950 ohms. I
measured 3900, and that agrees with what I find when tracing the schematic.
Here's what my manual says:
V308-4: 50K in both CW-OL and MOD
V308-5: 3900 (CW-OL) 950 (MOD)
V308-6: 2.2M CW-OL 500K (MOD)
V308-8: 500K (CW-OL) 120K (MOD)
Do any of you have a manual that shows differently?
73 Mark K3MSB
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