[Darrin Dunn]

Hello, everybody,

I’ve been on the ARF for 20 years, but somehow this is my first post here.  I’ve just got an 80C, and I’m making my first attempt at restuffing a block condenser. The one I’m working on is no. 27, which is a 7625-B/SU. The literature calls for a single .006mf.  I have .0056 and .0068 on hand, and I’m wondering if either (or neither) is appropriate.  How much can I get away with here, and in which direction (higher/lower) does it become an issue?

[MrFixr55]

Hi Darrin,

Either would be fine. I would go with the 0.0068 uF cap. Other radios actually have a 0.01 uF cap doing this job. This cap is to prevent parasitic oscillation and to cut down a little on high frequency.

Generally, any cap within 20% of the diagram is OK. This is a common problem, as nowadays, the caps do not have the same values as before. One can't find a 0.06 uF cap, only a 0.047 uF. No 0.02 uF,but a 0.022 is available, etc. I do not know the reason for the switch.

[morzh]

I would go with 5.6nF.

But, honestly, this is not really critical.

[Darrin Dunn]

Thanks, gentlemen, I appreciate the help. ?