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Old 14th Feb 2020, 4:44 pm   #1
coil1234
Pentode
 
Join Date: Jan 2006
Location: Almeria, Spain
Posts: 206
Default RA17 Rebuild and mod state query

Hello,
I have just started a rebuild of my early (Ser No N184) RA17. I'm initially looking at the 3rd IF strip and have found a few discrepancies between the circuit / parts list and the components actually fitted.
In this case R93 and R94 (1st IF Amp screen grid feed), which according to the circuit are two 47K in parallel, however on my unit I've found a 33k and 27k in parallel, additionally some resistors appear to uprated.

I'm wondering if this is a modification, my unit is up to mod state 37 and also has a red (letters) mod label on the rear, additionally it has a label on the rear which I believe means it was overhauled by Racal.

To this end does any one have a list of what each mod entailed?

Regards
Mike A
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