#31
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Quote:
Quote:
Just for example - two 20K half-watters in series makes a 40K @ 1 watt rating. Just as two 20K half-watters in parallel makes a 10K @ 1 watt rating. |
#32
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Alrightie, I finally got motivated enough to compare the original parts list, my list of parts to replace and the contents of the Mouser shopping cart, all is good there.
Once I get info on a source for tuner capacitor grommets, dial string and bulbs I'm all set. Nevertheless it's good to have the info on the resistors, that was a tough nut to crack. I clipped out the 1.6k 4 watt resistor and smashed it apart just to see how it was made. It had a white cylindrical ceramic core with stranded leads going all the way through each end, was wrapped with very fine wire and topped off with a thin green coating. I have doubts it was one of the more reliable designs. Now, can anyone point me in the direction of the last things I need? That would be great, a one-stop shop would be best. I'm finalizing a list and an estimate for the owner. |
#33
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This guy is a local cap vendor (I buy from him at swap-meets) and stocks dial cord and dial lamps as well as yellow film caps and lytics. http://www.radioantiques.com/
Some hardware stores stock rubber grommets if you look through the drawers (IIRC Ace hardware is one). Madlabs: I fixed the series parallel resistance value thing, I noticed I got it backwards (sometimes I have to finish typing fast and skip a proof read) before I read your post...However I agree with old coot the effective wattage of the pair doubles in both configs. In college I proved that mathematically a few times and can do it again if you doubt us.
__________________
Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
#34
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Tom, I knew it was a typo. And I sit corrected and thank you and old coot for setting me straight!
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#35
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Oh cool, that's one site I stumbled on, just needed confirmation of a good source.
Oh okay, so I don't need special tuner grommets, just the right size. I already added one grommet to my cart for the power cord. Got to replace the cord too, the insulation was falling apart. The owner thought it might explode if powered up as-is; maybe not explode but I'm pretty sure the end result wouldn't have been pretty. |
Audiokarma |
#36
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I'm sure there's no short answer to this, but can this radio tune FM stations? I can't make head or tail of this dial.
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#37
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M c/s = MHz, and K c/s = KHz. |
#38
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Gotcha, the frequencies in MHz looked unfamiliar to me and I didn't know what influence the markings on the right of the dial mean.
Anyway, I totaled up the cost of all the parts and supplies needed to restore this radio - the parts being a fraction of the cost - and at this point it looks like the owner doesn't want to bother with it so worst case I'll be hanging onto it as a long-term project. He wanted to use it regularly but there are no AM stations around here. No big deal, there must be something to listen to in the decent parts of the country. |
#39
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As for parts count, there isn't really any reason to change all the resistors, and you can use cheaper capacitors. That's a really cool radio and it would be nice to see it work, but I agree without any use for it it's a tough sell. |
#40
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May not be any daytime AM, but there should be some decent stations at night....I've regularly been able to tune AM stations from better than half way across the continent at night.
I don't know what to expect with short wave up there, but if somewhat close to the east coast there should be plenty of European stations.
__________________
Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
Audiokarma |
#41
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Soon enough I'll clean the crud off the front of the dial glass (I won't attempt the back) and take it to where I can scan it, just in case. I'll scan the original documentation as well. Quote:
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#42
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Hmm... get a small crappy portable fm radio and inject that into this radio.
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#43
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Would it be possible to align the FM radio for use with the Pye's tuner? I've been checking the values of AM/FM gang capacitors and they seem to be very similar. Also, I was watching a video by a fellow who made an FM converter that uses an antique radio's existing tuner but it's all in Italian as is his site.
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#44
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Another option is to look for a Pilot FM tuner and hook that to it.
__________________
Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
#45
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https://www.youtube.com/watch?v=VVo0AXA4IUc Ultimately this sort of thing is what I would like to do, a totally reversible "barely there" modification. I was thinking I might be able to do it with a modified automotive FM converter, but then MadMan mentioned the FM portable radio which would be much easier to get my hands on. |
Audiokarma |
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