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Thanks Tom for clarifying that the inductance of the transformer is predominant over the parasitic inductance of the resistors. - - Cheers Attilio

Bottom line is that with the weight of the 8753 there is no conceivable way the strap can fail , I fixed and handled hundrets of 8753 and other instruments at tucker and don’t remember ever a strap

and do not forget it is and angled force pull and a screw on either end ...so divide by 2. So it is a combination of pull and shear. Renée

Yep the screws are metric on top of it which means they have a finer pitch which is better to handle pull , if I remember they were either M6 or M8 screws , doing some quick calculations you would

The straps are mounted with quite sturdy screws into the frame side rails, and the plastic is just a cover for a stainless steel strap that is held by those screws. I have handled a lot of HPAK TE

The front handles can handle the weight but not impact if units ate poorly packed , as far as the side straps concerns I have never seen one of them giving in , not sure if you ever have taken a

Actually, I am not even worried about the color - I posted why I want them a few moments ago. You are right, virtually no handles available. I did buy some for a Marconi instrument I had, but weight

The problem is that the 8753 as you already noticed is heavy , when you have a unit is on a bench riser or in a rack people underestimate the weight they pull it out and then the unit drops Sent from

I would never ship it with the front handles on, I would have thought the handles would be more robust than these side straps. I have no confidence in them handling the weight. Rich

Actually - My instrument came with no front handles, and I do not trust the straps when carrying this behemoth. Rich

There is also no ripple on any of the voltage rails or voltage drop between U1 and U2. Yesterday I did remove the whole board and clean U1 and U2 with isopropyl alcohol, I wanted to avoid oily things.

I appear to have misreported some things... I can get pins 5&7 of U2 to be exactly the same with the balance control(R23), then on U2 pin 2 I get 42.30V and on pin 3 I get 41.81V, that is still a

Whoever cited parasitic inductance of resistors as something to worry about in this case is worrying way too much! The transformer will of course dominate by orders of magnitude. -- Tom -- Prof.

I just measured a very large (~3/4" x 7") 3 Ohm Ohmite Brown Devil. It measues ~3 Ohms and ~5 uH. My inductance meter is quite cheap, but I don't think it's off by a factor of 10,000.

Unless you find a new set the handles are fairly hard to come by , most companies removed them to avoid people trying to lift the units of benches using the front handles and as a result either

I smell a small amount OCD. But kidding aside, *beautiful* kit! I too want my equipment as clean as possible. Which, eg for the 5342a took quite a bit of time to assemble the cosmetically best parts

----------- The measurement that is most puzzling is pin 7 of U2 (=pin 13 of U1) is at 27.77V, pin 5 of U2 (=pin 12 of U1) is at 27.5V but pins 2&3 of U2 are nicely balanced at 42V. If internals of U2

Seconded! I'm not currently active in there, but have been in the past... -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, ?a

I would also highly recommend the site: https://antiqueradios.com/ especially the forums. Hal

Hi the group you want is [email protected] They talk about a lot of different WW2 radio equipment I assume you have the service information on the B40 note there are various versions that