Home |
Search |
Today's Posts |
#11
|
|||
|
|||
Who says the owner is actually gonna plug in the darned thing and listen to
it! That four-figure radio is a trophy....not a radio! Personal story: I just took delivery of an almost mint vintage 1967 ham transceiver. It was out of the box for about three hours, playing on the test bench when.....kapow!... up went a "point-one" bypass cap in smoke. Well, my "mint" radio lasted about that long. Get out the soldering iron. Only a fool pays $3,000-plus for an old Hallicrafter radio....a Bigger fool will turn on the power switch! Pat, WPE9JRL "starman" wrote in message ... As you may know, there's an SX-88 on Ebay. The pictures show it still has the original paper capacitors like the 'Tiny Chiefs' and 'Black Beauties', which are known to become leaky. Should a valuable radio like the '88' be run with these caps' and possibly damage an irreplacable componant, such as an I.F. transformer? Would it lessen the value if it was recapped? -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
#12
|
|||
|
|||
starman wrote:
As you may know, there's an SX-88 on Ebay.... Would it lessen the value if it was recapped?.. Yes, it will. You might want to consider something I've written about before- lowered B+, which may allow you to use the radio safely with leaky caps. I've successfully run collectable radios with 24 volts on the plates and an external, amplified speaker. They work fine with no componant damage and have done so for years. Pull out the rectifier and apply 20-50 volts to the B+ buss to see "how low you can go." You can use series caps in the HV transformer leads to drop the voltage, which is better than trying to use a dropping resistor. Unless you have a cap that is a dead short, I'd bet the radio will play for you. Before anyone writes back about "cathode poisoning," that debate went on a couple of years ago and the outcome was that it was pretty much a mythical problem. If you don't want to run low B+, you can do another trick- unsolder one lead from the old component, tuck it out of the way and "tack" solder in a modern replacement. The radio can be put back to 100% original if a collector cares to do so. I've recapped and re-resistored some WWII radios this way. GL OM ES 73 DE Dave AB5S |
#13
|
|||
|
|||
"starman" wrote in message ... As you may know, there's an SX-88 on Ebay. The pictures show it still has the original paper capacitors like the 'Tiny Chiefs' and 'Black Beauties', which are known to become leaky. Should a valuable radio like the '88' be run with these caps' and possibly damage an irreplacable componant, such as an I.F. transformer? Would it lessen the value if it was recapped? -----= I'd be more worried about the quality of the workmanship. I've seen some pretty shoddy "restorations" by "profesunals" that left a lot to be desired. Pete k1zjh |
#14
|
|||
|
|||
The only set I left bad caps in is my SX-28 because I was too chickensh*t to
go in that RF section! -- Brian Denley http://home.comcast.net/~b.denley/index.html "- - Bill - -" exray@coquidotnet wrote in message ... The only set I have knowingly left bad caps in was a Volkempfanger DKE 38 that looks like it just rolled off the assembly line. Clearly its not going to be a daily "listener" and all the new caps in the world ain't gonna help it much. It does work, however. |
#15
|
|||
|
|||
PLEASE EXCUSE CAPS, SHORT REPLIES, STROKE Bill Turner, WA0ABI, 1117 Pike St., Saint Charles,MO 63301. Phone 636-949-2210 Plastic Dial covers, any size, any shape. $14.00 Glass Dial covers, 2" to 8 7/8" x 1/16" incr, $14.00 ELECTROLYTIC CAPACITORS, new, 7/8"DIA. X 3" OR 3 1/4" long, shiney red or blue cover, brown end seal, printed inscription down the length, metal mounting strap with a hole for mounting. 33uF-47uF 160 volts, $2.50 33 uF-33uF-33uF 160 volts $3.00 47 uF-47uF-47uF 160 volts $3.50 33uF -47uF 160 volts 47uF/100 $4.00 with bias cap. 33uF-47uF 94 uF/100 volts $4.00 (AC/DCbattery sets) 22uF-22uF 450 volts $4.00 (for AC sets) 22uF-22uF-22uF 450 volts $4.50 (for AC sets 10 uF 900 volts $6.00 HALLICRAFTERS S-38, A, B, C, D, E, $10.00 ZENITH T/O (can type) all except 7G605 $15.00 . ALL POSTAGE PAID,cashr, check, money order For a business SASE a copy of the Pocket Resouce Guide and my personal four page catalog of pieces, parts, and manuals. |
#16
|
|||
|
|||
The fact is in the UK at the moment a nice vintage WORKING radio is worth much more than an untouched non working one.. This may change over the next few years of course Take the famous R1155 receiver, the mod to remove the defunct DF componants in the 50's has reduced the value on Ebay to about £60 a complete but none working one goes for about £100 BUT a complete and working one even if a few caps have been replaced I've seen go for over £200 so who is to say? Also I must agree with the low voltage option!! I have found this myself, take an old radio with leaky caps and dodgy smoothing and leave it running warm at about 30% power for a couple of weeks 24hrs a day and it comes back to life remarkably well!! at least it gives you a working perfect example, if I am forced to do any mods like changing caps plugs or leads I shrink wrap all the removed bits and attach them with a description of what was done to the case inside. as after all we are only temporary owners ) These days I prefer to buy old sets that have been modified or are badly beaten up for a silly price, I have more fun getting back close to original working spec and don't feel guilty replacing parts hi!!! from Ron..... On Thu, 04 Dec 2003 02:55:36 -0500, starman wrote: As you may know, there's an SX-88 on Ebay. The pictures show it still has the original paper capacitors like the 'Tiny Chiefs' and 'Black Beauties', which are known to become leaky. Should a valuable radio like the '88' be run with these caps' and possibly damage an irreplacable componant, such as an I.F. transformer? Would it lessen the value if it was recapped? -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
#17
|
|||
|
|||
"starman" wrote in message
... As you may know, there's an SX-88 on Ebay. The pictures show it still has the original paper capacitors like the 'Tiny Chiefs' and 'Black Beauties', which are known to become leaky. Should a valuable radio like the '88' be run with these caps' and possibly damage an irreplacable componant, such as an I.F. transformer? Would it lessen the value if it was recapped? I own an SX-88 and I had no hesitation in recapping it. I use it regularly. If you're not going to replace the old capacitors, then DON'T turn it on. I collect radios for the purpose of restoring and using them, so the concept of owning an unplayable "shelf queen" holds little allure. I doubt that recapping would seriously affect the value of this particular set, but then I don't operate a museum full of shelf queens. You can always save the old caps in a sack in case some future owner wants to restuff them. Keep in mind that it's basically impossible to restuff a plastic cap such as a Black Beauty. Regards, Phil Nelson Phil's Old Radios http://antiqueradio.org/index.html |
#18
|
|||
|
|||
"Phil Nelson" wrote in message I collect radios for the purpose of restoring and using them, so the concept of owning an unplayable "shelf queen" holds little allure. I doubt that recapping would seriously affect the value of this particular set, but then I don't operate a museum full of shelf queens. You can always save the old caps in a sack in case some future owner wants to restuff them. Keep in mind that it's basically impossible to restuff a plastic cap such as a Black Beauty. Regards, Phil Nelson Phil's Old Radios http://antiqueradio.org/index.html I'll bet Syl comes up with replicas pretty soon, if he hasn't already. Should be very easy to make molds of the originals, and then recast mylars with an expoxy shell... Add some paint, lettering, viola! Pete |
#19
|
|||
|
|||
" Uncle Peter" wrote in message
news:6egOb.10630$ct4.4087@lakeread05... I don't operate a museum full of shelf queens. You can always save the old caps in a sack in case some future owner wants to restuff them. Keep in mind that it's basically impossible to restuff a plastic cap such as a Black Beauty. I'll bet Syl comes up with replicas pretty soon, if he hasn't already. Sure, why not. And rather than waste good new mylars inside those repros, he can have a few hundred bad old paper caps from my saving-sacks. Then he can peddle the repackaged "bumblebees" to guitar guys on Ebay for $$$. No point wasting time trying to match up correct values -- those guys want distortion, and I have bushels to offer! :-) Phil |
#20
|
|||
|
|||
"Mike Knudsen" wrote in message
... I was surprised when I traced it to a very leaky steel bathtub cap -- I thought those mil-spec babies never went bad. I left the cap in place a wired a replacement on top of it (not beautiful, but easily "restored" to "original"). I had the same experience when restoring my 2nd Scott 800B6. Someone alerted me during that project that some bathtubs are in fact paper caps, not oil-filled, and you can't really tell the difference by staring at them. I tested them and sure enough, they were leaky as heck. I wired replacements around the original bathtubs, as Mike describes. One of these days, I should go back through my 1st 800B6 and check the bathtubs that I left untouched, on the assumption that they were "just fine." Phil Nelson Phil's Old Radios http://antiqueradio.org/index.html |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Wizard Radio in Seven Corners, VA, to receive WHFS in Annapolis-followup | Antenna | |||
What Exactly is a Radio Wave? | Antenna | |||
How to connect external antenna to GE Super Radio III | Antenna | |||
Review: Amateur Radio Companion 3rd Edition | Antenna | |||
Vintage radio books for sale | Boatanchors |