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Hi Dennis, Please read my following comment also with a smiley. "That was a very stupid typo I made." The speed of light you used previously was exactly 75% of the correct value. A remarkable typo ;-)

Some 15 years ago I bought this scope from usa intending to recap it . 10 years ago I bought all the parts according to an on line spreadsheet. and thats as far as it got. because father time was

Does anyone have or sale or a source for the impeller fastener, Tek P/N: 343-104-001? Thanks in advance. Jon

I do not have a specification, but a story. A year ago I got around to investigating why the front fender mounted antenna on my 1966 Corvair was not working, infinite resistance from Motorola plug to

Hi Siggi, YIKES! Thanks for catching my error. That was a very stupid typo I made. I know the speed of light by heart. I was getting tired when I was doing that part of the write-up and I remember I

Tom, I found all the advice helpful. Any comments and advice is greatly appreciated! Your confirmation of Dave's diagnosis is a great help, going back through his comments as well. I am reading the

This morning you got a nice reply from Dave Hills that talked about the parts of the circuit in question that limit and control the over voltage of the +110 circuit. This led me to? search the 475A

Thanks Chuck, Don't worry, you never saw this machine - it's sort of my beater. best, john

I know the length, and from that can calculate the velocity factor. Or rather, let the 1502b calculate the factor for me. <merchison@...> wrote:

I forgot to say Thanks to All for such complete answers. I appreciate your patience with a very inexperienced individual. I will post results. -- Michael Lynch Dardanelle, AR

Dave, No worries on the caps! I understood why you were using them, I sometimes do the same thing and hope that people figure out my meaning. Renee, Tom and Dave, I will do some more probing and post

Dennis Tillman W7PF wrote on 4/29/2019 2:33 PM: <snip> Hello-- This is off-topic and only of historical interest, but does anyone have a spec for the coaxial cable used in early automobile-radio

Dennis, You have an error in the free space velocity which Albert mentioned indirectly. Multiple reflection in the cable produces one or more poles in the transfer function. The SG503 may compensate

A follow up bit of information which may matter with the SG503 cable: Within Tek it came as a surprise to at least one very senior engineer I know when he discovered that BNC connectors were NOT

wrote: You misstated the sped of light in vacuum, which is 299792458m/s per Wikipedia, whereas your doc states "The speed of light in a vacuum is 224844343.5m/Sec = 0.2248m/nSec.", which is a 25%

Hi Merchison, I don't know about the 1502, but the 7D12 which I used has the ability to preset any velocity factor on the POLY scale between 0.67 and Air (which is one of the other distance scales).

Hi Albert, I think my derivation is valid and I know the VF can't be that high. Did I leave something out in the way I calculated it? My purpose in calculating it (regardless of whether I got a

Hi to All, Around the mid of 2013 their was a comparable discussion of this cable on: http://www.amplifier.cd/smf/index.php?topic=359.0 Now only accessible for Members. Nevertheless clues of it are

I know that. I was pointing out that the velocity of propagation in a cable is not the same as in space and that it depends on the physical nature of the cable, including its dielectric constant but

You need to get the specifications (using the part number on the cable) which you are going to use (or test) and plug-in the Velocity factor into the 1502 for the distance reading to be correct.