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Re: 425 Mil vertical module needed....seeking
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Thanks Fabio...I'll note all that and look at the URL's....It will help me gain knowledge I am much appreciative and will follow your leads. I think you
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are pretty much on the ball in what you are telling me as it supports what I am slowly learning... I hear rumours that the 465 Military was also nominated as 425 Military. The same rumour included that they were built to be rapidly pulled down for field service. Dinos of qservices, advised me "So 465M and 425 are exactly the same oscilloscopes, sometimes the badge on the front may say 465M or AN-USM 425 ........there is no other connection or similarity with models 465 465B 475 or 475A" Completely away from that....I bought hundreds of Tektronix scopes for the Australian services during Vietnam. In my view the BWD was a better scope, better specs,a lot cheaper, easier to service, lightweight and Australian made. I refused for months to agree to the Tektronix and the outcome is an interesting story which I still cannot repeat. My BWD still works perfectly (or seems to!) and has never had a repair. The reality is that the extremes of technical possibility with (say) Tektronix is I say from imagination ...used rarely, it's essentially lab equipment and portable if you own an elephant. I recall carting one when with IBM... We were expected to walk many blocks carrying quite a heavy tool load and sometimes that included the CRO...bus fares were not reimbursed. I suppose it's like owning a Lambo or something of that type.......it's a real buzz, expensive, expensive to service but you rarely use more than 5-10% of its possibilities. I bought the 425 because I have always lusted after a Tektronix...and I guess some military prejudice with the 425M.....It was faulty in the ChA vertical....I ought to have realised it wouldn't be a simple repair...well it would be in Echelons...pull the vertical out...5-10 minutes, install another, U/S the faulty one and send it away for component level repair, the unit now back in business. Where are all those scopes and spares now? I can only say "deo gratias" for the site and the helpful people in it....Ciao Fabian -----Original Message-----
From: Fabio Trevisan Sent: Thursday, November 1, 2018 1:56 AM To: [email protected] Subject: Re: [TekScopes] 425 Mil vertical module needed....seeking Hello Jack, What you refer to as 425 Mil is, for correctness sake, a 465M or an AN/USM 425. It confused me at first, as I didn't recall there was ever a 425 oscilloscope. For what I know, the 465M is electronically similar to the civilian 465 (but even at electronic diagram level, there ARE differences), but, for the sake of assemblies or sub-assemblies, they're essentially two completely different oscilloscopes (i.e the boards are physically different). As mentioned on this () page of the TekWiki website, the 465M is more similar to the civilian 455, than it is to the 465. I can't really tell by how much they are similar, but you may be able to compare them by yourself by looking at the service manuals of both, which are available on the TekWiki website. The page for the civilian 455 is here: I don't know much of either (455 or 465M) but, coincidentally, there's a seller on a Brazilian auction site, selling the modules of a Tektronix 455: I can't tell how similar those modules are (to your 465M) and if they can serve as parts donors, but if you find out that they may help, you can try to contact the seller, or I can help you with the purchase and shipping of the module (or the parts) to your location, for their advertised cost and shipping expenses to your place. Note: I have no affiliation with the seller (and don't even know if I know them, since the auction site only reveals the seller after you purchase the item). I normally wouldn't even make this offer, as shipping from Brazil is usually prohibitive and the parts are not even mine... But since you're so far away down under, I think that shipping from anywhere will be just as difficult. Please let me know if you want my help, or maybe some other folks in the group will chime. Krgrds, Fabio On Tue, Oct 30, 2018 at 06:52 PM, Jack wrote:
-- Jack |
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