On 2021-04-12 8:59 a.m., Adrian Godwin wrote:
To complete the trio : SECAM is Something Essentialy Contrary to the
American Method, and PAL is Perfection At Last.
I recall hearing it as "Pay (for) Additional Luxury".
the early sets would have needed extra circuitry to decode the
alternating
Martin, i'd use some emory board (nail files) to lightly sand the rust off of
them.done that with a few tubes myself with no issues.
Cheers,
Nick
Sent from my iPhone
> On Apr 12, 2021, at 19:47, martin martin wrote:
>
> Hi all,
>
> I had a few Burroughs B5092s sitting around and
Hello B Gladden,
First, congrats on joining.
The 252 and 352 are basically the same except that the 352 has 2 keep-alive
indicators which are not needed. That is why they have the 2 extra pins that
the manual and Bill mentions.
You ‘could’ even use a 752 if a must, although the resistors
It may depend on the Heathkit clock you have. I have the original GC-1005
that uses the SP-352 tubes just fine. I do note that the 353 displays have
more pins than sockets (pin bent out of the way) so perhaps the 352 is a
superset of the 252. In the manual on page 20 it indicates that your
Hello all just found and signed up for the board! Really interested in what
you folks do here.
Just found a neat Heathkit kit clock at a yard sale and I'm hoping to
revive the little guy. I assume the thing needs these 45 year old
capacitors replaced at some point, but my real issue is with
On Mon, Apr 12, 2021 at 1:34 PM Robert G. Schaffrath <
robert.schaffr...@gmail.com> wrote:
> locking on). NTSC (Never Twice the Same Color) was a bit of an issue with
> needing Color and Hue controls that adjusted the TV's
>
To complete the trio : SECAM is Something Essential Contrary to the
Yes the work done to get color into the 3.58MHz (well something
like 3.579545MHz) was incredible. The math involved in transmitting the RGB
info is truly amazing. And it was all decoded through analog circuitry! No
digital processing involved. Quite a feat for its day. In fact, NTSC TV's
were
