Quote:
Originally Posted by kx250rider
That's an odd envelope, if I recall. The only two swappable Japanese and US tubes of that era, would be the 490xxxB22 and 19xxP22. Maybe with a little fooling around with the mounting, you could get an 18V in there, but I'd try for a correct one first.
Charles
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510XXXB22 envelope size = 18.898" diagonal, closer to the early 19V's (18.897'' diagonal as registered with EIA) - the 490XXXB22 envelopes are either 17.637 or 18.075" diagonal. Basing, neck length and mounting method are your biggest worries. Yours is probably a typcial 14BE basing, but as for neck length, 510XXXB22's are all over the place - blame Hitachi, Toshiba and Clinton(Taiwan) - all three had their own neck arrangement. The neck length differences
are small - only a CM or so for most. Mounting methods are also varied - does your Sanyo use a banded lug system, corner mounts, or integral lugs?
Just for example, for the 510ELB22, RCA lists 19VDT/VED/VEU/VBR/VHB.VCTP22's as possible direct replacements. For the 510ERB22, similar 19V replacements are all that is offered. Both the RCA PIX-300G(1973) and PIX-300J(1975) CRT Guides have only these two 510-series CRTs listed.
Cheers,