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Mohican question, capacitors.
01-23-2016, 06:14 PM
Post: #44
RE: Mohican question, capacitors.
Jebem:

Got the list of caps from the parts page and locations. This version has the AC option with no battery box, so I have to add a 3000mFd to that list, size of a c cell. Thanks for the update and the time you have taken Jebem.

I will try the electronics section in Hong Kong Monday for all the caps. It does appear that this was recapped although as stated earlier, their values are even greater then 50% over. I have re-capped radios before and see the standards have changed 50 versu 47. With the wide variance of values at the factory, why worry about 4700mFd versus 5000mFd let alone 47 versus 50. My OCD likes the 50s divisions :-)

I am checking Mouser and Digikey for the can with three 100mFd. I have also seen this can replaced and on some circuit boards for the Mohican, labelled for three discrete 100mFd caps. I like the can option, tidier ( see above and OCD).

Thanks for the transistor versus positive ground info. I was wondering why it was designed with the positive ground.

I was trying to source the transistors (obsolete) but did find a Russian source (eBay SOVCOM) and awaiting a response. Researching radio forums the (SOVCOM) eBay store was pointed out for Zenith transoceanic replacements with great success. Would you know a source?

At the moment all transistors appear to be working form the initial test (turned on the radio when I purchased it) by cycling through all the bands and it was receiving on all bands. I haven't tested them separately but may get a cheap Chinese tester on Monday (watched a couple of YouTube transistor testing videos last night).

Thanks again all!

Dave,

still awaiting the manual form HeathKit but your Adobe version is a life saver, the radio is looking like New Old stock for fit and finish. Just awaiting the power supply cap replacement and new ac cord.

Geoff
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Messages In This Thread
RE: Oscilliscope question - Garth Wilson - 01-21-2016, 05:49 AM
RE: Oscilliscope question - walter b - 01-21-2016, 09:55 AM
RE: Oscilliscope question - jebem - 01-21-2016, 05:16 PM
RE: Oscilliscope question - rprosperi - 01-21-2016, 11:51 PM
RE: Oscilliscope question - Steve Simpkin - 01-22-2016, 04:15 AM
RE: Oscilliscope question - jebem - 01-21-2016, 06:27 PM
RE: Oscilliscope question - Garth Wilson - 01-22-2016, 02:10 AM
RE: Oscilliscope question - vk6ti - 01-22-2016, 09:30 AM
RE: Oscilliscope question - jebem - 01-22-2016, 10:29 AM
RE: Oscilliscope question - jebem - 01-22-2016, 08:46 PM
RE: Mohican question, capacitors. - vk6ti - 01-23-2016, 12:14 AM
RE: Mohican question, capacitors. - jebem - 01-23-2016, 07:55 AM
RE: Mohican question, capacitors. - Geoff Quickfall - 01-23-2016 06:14 PM
RE: Mohican question, capacitors. - jebem - 01-23-2016, 07:53 PM



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