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Greetings! I have an SC504 on the bench. What is the 250 ohm trimmer pot that is on the Hv Board? I can’t find any documentation on this mod. Insight would be appreciated! Barry

The VERTICAL POSITIONING pot looks to have been completely, and very cleanly removed. The violet striped, red striped, and black orange brown striped wires that (I assume) went to the pot were cut

Hi, no I meant modifications on the 465. During the years of production problems in the field can occur and as result modifications to improve the performance and reliability, quality etc.

A tiny update... The 2236 is successfully apart. I did find the CH1 probe sense problem, apparently TEK forgot to solder the W9100 connection on the A3 board, the wire was in the PC board hole, just

True. But, it's not the same is it. Here you are... pretending... and fantasizing... about being back in the day... of vacuum tubes and zinc plating... when what you are holding in your hand isn't

Well... I hope you can get it. You'll have to find the head/probe... or construct it..not hard; but, tedious. IMO... it won't satisfy someone who is new/newer to electronics: even though it is a Tek

Just the knob or maybe a parts unit? Thanks! Marty KL7AM

at a flea market? doesn't make sense. -- Roy Thistle

Only if you pay for Terapeak... Ebay's for pay, marketing tool, that shows what items actually sold for... which can be surprisingly less than what the listing indicates. otherwise it's just Ebay

Greetings, What is the recommended substitute for the WG1306 diode? 120v 150ma trr=4ns Barry

For appraisals, my go-to is eBay completed items. You’ll see what stuff actually sold for. There have been no recent sales on the -D model, but a -C sold for $270. Seller was asking $300. Put it

> if I understand correctly (big if!), that intermediate frequency is produced by mixing the 2nd LO 2182 MHz output with the 2072 MHz input signal from the 1st converter. I'm trying to understand why

Did you mean 2467B? DaveD KC0WJN [email protected]> wrote:

Ok, thanks. Is there, given the serial number (109003), any indication that some modifications are already executed factory wise ? I will have a check of course on the components both of you

Rebonjour Wilfred Bravo for the new 465. Since the 1970s the successors were improved, so 465B has better control, LED not incandescent etc. Nowadays the last of the analog CRT scopes from

Wilfred, At the age of the scope, recapping is a good idea. The two 1.5A bridge rectifiers should be 4A types. These bridges are known to go bad. Increasing the capacitance is fine. If you replace

Sorry, I should have been more clear. I was looking at the manual step "Check/Adjust the Cavity 2nd LO" which says to connect a microwave counter to the 2nd LO output and measure 2182.0 ±0.5 MHz,

I have a TDS520D ( 2 channel, 500Mhz, 2GS/sec) that I am planning to bring to a local flea market to sell. I'm trying to figure out a reasonable asking price. Doing a Google search returns a very

If you want to finely adjust a 110MHz signal, a 7T11 time base would be useless with its very limited frequency accuracy and resolution. Raymond

If you want to measure frequency, then the 7D14 is probably the tool choice (to get in the ball-park anyway), but GPS locked counter will be better. David