Batboard

I'm looking for the part numbers from either digi-key or mouser for re-capping my spectra. I found some stuff from the late 90's and early 2000's, but those part numbers are dis-continued or not used anymore. I'm specifically looking for capacitors with radial leads. Can't do surface mount .

Thanks,

Tim

I used the suggested parts from the Repeater Builder Spectra page: http://www.repeater-builder.com/motorol ... -caps.html
I agree, the OEM SMT caps are a PITA (acronym overload? ;p) and I strongly prefer to use radial lead replacements.

motorola_otaku wrote:I used the suggested parts from the Repeater Builder Spectra page: http://www.repeater-builder.com/motorol ... -caps.html
I agree, the OEM SMT caps are a PITA (acronym overload? ;p) and I strongly prefer to use radial lead replacements.

The surface mount part numbers are correct, the radial lead cap part numbers are outdated on the repeater-builder site.

Tim

These are the ones I used in my low power A5/A7 radios:

http://www.mouser.com:80/ProjectManager ... 70ff075614

The quantities on that list are for six radios. I've done four with these and they all fit and work great. Even the 10uF 50v caps in the head fit behind the plastic frame without modification.

MP 6.7 wrote:These are the ones I used in my low power A5/A7 radios:

http://www.mouser.com:80/ProjectManager ... 70ff075614

The quantities on that list are for six radios. I've done four with these and they all fit and work great. Even the 10uF 50v caps in the head fit behind the plastic frame without modification.

Can you use a 10uf/25v in place of a 10uf/16v?

Can you use a 47uf/25v in place of a 47uf/16v?

I would seem to think so since the voltage rating is higher.

Tim

tskilbride wrote:

MP 6.7 wrote:These are the ones I used in my low power A5/A7 radios:

http://www.mouser.com:80/ProjectManager ... 70ff075614

The quantities on that list are for six radios. I've done four with these and they all fit and work great. Even the 10uF 50v caps in the head fit behind the plastic frame without modification.

Can you use a 10uf/25v in place of a 10uf/16v?

Can you use a 47uf/25v in place of a 47uf/16v?

I would seem to think so since the voltage rating is higher.

Tim

I seem to remember reading somewhere that the 16v capacitors were used very close to their rating. Using 25v capacitors doesn't change anything, it just adds a little more margin for safety. They're slightly larger than the 16v versions but where they're used the size difference isn't enough to matter. I've done a few radios with the caps from that order and they're all working great (with the exception of one that needs a new audio PA, but that wasn't caused by the new caps).

MP 6.7 wrote:These are the ones I used in my low power A5/A7 radios:

http://www.mouser.com:80/ProjectManager ... 70ff075614

The quantities on that list are for six radios. I've done four with these and they all fit and work great. Even the 10uF 50v caps in the head fit behind the plastic frame without modification.

These worked perfect. Now when I TX, it sounds off-frequency. RX is just fine to the ear anyways. Do these need to be aligned after being re-capped?

Tim

tskilbride wrote: Do these need to be aligned after being re-capped?

Short answer: While not a "normal" part of the capacitor replacement process, it certainly couldn't hurt.

Long answer: Any radio requiring any serious level of board-level repair should receive at least a cursory check of TX frequency warp and deviation as part of the normal repair process, if not a complete realignment. That goes double for old radios like Spectras, even if they're just going into ham service. Even if things weren't knocked out of whack by capacitor leakage there's a fairly good chance it needed a tune-up before the caps did their damage.