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Hi Dave, Thanks for the reply. I spotted a nice K212 on Craigslist and jumped on it. The 475 fits! The U-shaped channel is missing so I will have to come up with a replacement. Regards, Tony

Soldering could be safer, or it could accidentally short the voltage to ground and delete the constants. I figure that a) I calibrate scopes regularly, so the constants are nothing special to me, and

If by Sprague 300 electrolytics, you mean 30D electrolytics, there may be a few that are bad. I would guess about 5-10% of all 30D's out in the field are bad by now. The worst hit in the 30D family

Thanks for that, Peter. Concise and clear. Raymond

By the way Jim, I think I forgot to send my location. Bill Carns 661 Saddleridge Drive Wimberley, TX 78676 Many thanks again.

I've never actually tried a 465 or 475 on a K212 cart, but it should work. The K212 is wider than the older carts used for the 475 et al and it has the u-shaped channel in the front to receive the

Hello Bill - I saw your message about extenders. I need to see how many parts I have, but I am pretty sure I have everything. I'll check today some time and let you know. Do you want one extender or

Hi Reed, Yes sir working at the Radio Museum is a lot of fun and hard work at the same time but now that I am retired it is a great place to volunteer a few days a week. Between the NTE539 and NTE538

Raymond, thanks for the reminder. I've taken the liberty to add a short write-up based on your post to the TekWiki pages on 7A18 and 7A26. Best Peter

Thanks for the kudos, it's from one of my own 7A18s. BTW, the contacts under the board on the other side of the cam switch are for the readout circuits. It's no big deal to remove the board for

/g/TekScopes/album?id=86278 -----Mensaje original----- De: [email protected] [mailto:[email protected]] En nombre de Gudjon Gudjonsson Enviado el: domingo, 19 de agosto de 2018

I bought my battery at Mouser a few years ago for my Tek 2465A DV. I also soldered the wires to the battery holder that I used to the board because I was afraid the alligator clips might come loose on

Sorry, that email address got truncated I see - the last part is JUNOdotCOM Pete.

I've just ordered a set on eBay from John Nery, currently awaiting delivery. These are in kit form so some soldering will be required. He makes custom boards to order using a CNC milling process. I

Hi Ripley: Wiring in a NTE538 is a little different than wiring in an NTE539.? When you get your 3Xer write ma back and I will detail how to do it. Your antique radio setup sounds most interesting.?

Hello thanks for some of the advice earlier for my problem. Not sure what did it exactly but the issue is gone. I am thinking that short caused a solder joint to crack on a ground some where. Just re

<Sal_rosselli@...> wrote: That is not a high failure rate part. I wouldn't worry about it.

Hi Wilson, Best solution I have seen, and one I install myself on each 577 I get, is to replace the pushbutton with an ON-OFF-MOMENTARY Miniature SPDT Toggle Switch such as a C&K 7107. In the middle

I would like to go back to my original question in my original post about any maint. issues such as changing out the original sprague 300 lytics and also if anyone has any spare parts for one? jim O

Hello to all, I was wondering if the K212 cart is okay for use with a 475 scope. TekWiki says the cart is primarily for 2000 series scopes, but it looks like the 475 would fit. Thanks, Tony.