开云体育

Well Richard , they likely were much better … until they cracked open… do we know ? So when and why did many/most eventually crack open ? did pressure from chemical decomposition build up and

Seems to me the older cap values are the same as for resistors and by standards for 10%... ”The series looks as follows: 1– 1.2 – 1.5 – 1.8 – 2.2 – 2.7 – 3.3 – 3.9 – 4.7 – 5.6 –

The discovery of electromagnetism is indeed a fascinating subject. In case you don't already have them, please find below some links that might be useful, and a .pdf of an article about Romagnosi's

Ohhh, I forgot the curiosity factor. There is always something to learn, or perhaps make you even more curious; a bit like kids opening Christmas presents. Right now I am still curious about how Gian

Same here, Justin.? Back in the late 1970s, before prices of used stuff went crazy, I bought a Hallicrafters SX-88 sight unseen from a guy who described it as a "basket case".? Think I gave him $100

My struggle was reading the color bands reliably. Thankfully others chimed in who were much more familiar with the radio and the values. Amazing how much room you gain inside as those chassis as the

Well, interesting results today.? I received my "new" Johnson TR switch yesterday and had to recap its power supply and do a lot of physical cleanup work to it.? I next removed the antenna relay

Its obvious that the Sprague Black Beauty caps (Bumble Bee) are not the only ones to suffer from the casings disintegrating. These were supposed to be much better than the cardboard and wax casings

Progress….albeit slow. All the major caps replaced that I can easily do without taking the face off. Filter caps hit the mailbox anytime now. Will get those installed tmw. Fingers crossed.

Really glad I waited on power application to this radio. Everyone of these tiny chiefs were in some form of break down or

ok, i sent you an email,..

im not sure what address you want me to use,, my email is kullom99@...

Hi KU, May be able to help. Send pm to rantidromic at the Google place. Cheers, =Randy= Get Outlook for iOS<https://aka.ms/o0ukef> ________________________________ Sent: Saturday, March 23, 2024

22000/1000000 is not .0022.? According to my Chinese calculator. Bill

Looking for an R-274 parts radio, if anyone has a parts unit that they will sell, id be interested,,I need a bunch of stuff, so, thought it might be better to find one, if possible,, need an rf gain/

Thank you so much Dan. I may have to take you up on that. I have a really good schematic and slowly learning where everything in the radio is located in relation to the drawing. I am not an

Many thanks Jacques! The replies received so far back up my initial values pretty well. I was very unsure of Bees 3 & 4. Need to check and see if I have a value close to the .0018's. Thinking there

??Keith, I happen to have an SX-100 Mk1A opened up on my bench right now. It works pretty good. Belongs to a friend and we went through it about a year ago replacing all the paper caps, PS cap, a

Don - You pretty much nailed my reasons!? To me it is very enjoyable to open up a box with a "dead" radio and after a few days work have come to life! Floyd - Maybe I was a bit harsh but some of the

Dang… I made an error on this one: Bee4: brown, gray, red, gray, blue = 1, 8, 00, 8, 6 = 1800?F = 0,0018?F, 10%, 600V I really meant : gray, red, gray, blue = 1, 8, 00, 8, 6 = 1800pF = 0,0018?F,