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Thanks. Here's rev. "PE" picture:
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/g/TekScopes/album?id=66032 The technically-commented revision history should be in the IRB for the '549. Hopefully available in VintageTek's microfiche database. Thanks, Sebastian. Rajesh VS wrote: Thanks Sebastian, Interesting, Mine as well as the one Kurt posted back in 2008 have marking "PC" Both have (c) of 1965. Pics here - The one in Manual is PB,mine is PC, and what you have is PE, So I assume there is manual for later Revs and possibly a PD board too ? . . . On Tue, Aug 7, 2018 at 12:32 AM, Sebastian Garcia <sg-listas@...>
wrote: Thank you, Rajesh. Yes it seems so, as this one is #5202 (Portland facilities). The mod has been done in 1965, as both the board picture in the available manuals and my physical board have printed "1965" in a copper/gold area. The figure shows also the "PB" inscription, while this physical board shows "PE". A revision version? For reference, the mentioned picture is the following: - (BAMA manual, S/N 1408) Fig. 4-16 in page 4-11 (with a typo in the overlay label for R1185). - (manoman.sqhill.com manual) Fig. 4-15 in page 4-10. Both manuals are available on Kurt's site. Regards, Sebastian. Rajesh VS wrote: just for reference, I DO see R1185 in my 549, Scope Serial # - 001295. May be the change happened in later Revs? regds Rajesh . . . On Mon, Aug 6, 2018 at 8:39 PM, Sebastian Garcia <sg-listas@...> wrote: Hi, I know this is an old post, but same puzzle here. Trimpot R1185 and nearby flood-gate related components (appearing in the available PDF manuals) aren't physically present in my storage board (dated 1965). Any clues on the storage circuits evolution of this model? Regards, Sebastian. Tim Phillips <tim@...> 06/20/10 #49860 from Tim P (UK) I am trying to cal a 549 storage 'scope ser# 701529 The manual refers to FG cathode level R1195, but on this instrument this pot does not exist. In fact it appears to have never existed on this storage board (dated 1965). Both my manual and the BAMA one show it (sectn 6-45 and the schematic) There must be another manual with a different cal procedure. Anyone have any insights ? many thanks (confused) Tim P |
