newsmark said:
Might there have been a 5:00 feed of CBS Evening News at the time?
AFAIK, Cronkite was always 6:30/5:30 and 7/6 on the New York feed
since it went to a half-hour.
As far as the number of tape machines, I worked at a station that delayed a 1 hour show (network 10:30 - 11:30 pm) by 30 minutes. We did it with 3 machines.
Agreed--a 30 minute delay is much less stressful, a one hour DB a
piece of cake.
For 5:30 - 6 PM
Tape 1 Record 5:30-5:40 Playback 5:45- 5:55
Tape 2 Record 5:30-5:50 Playback 5:50- 6:05
Tape 3 Record 5:30-6:00 Playback 6:03- 6:15
You could start the send and third recordings later, but this way makes it a lot easier to sync up. They could also make it even simpler if they actually started CBS News at, say 5:47 and let it run 'til 6:17.
Interesting that you started all together, as it does make the subsequent
segments sort of a "backup" for the preceding segment. Did you run a
separate backup of the half-hour on a fourth VTR?
Your tape schedule scenario for Cronkite appears to work, if you decide
to "live even more dangerously"--where the first segue has less than 5:00
for synch-up, and the second is an on-the-fly where you may not have
much more than 2:00 to get done. One thing in its favor is the system cue
was about 5:58:57 so you get an extra minute to fool with.
I'm much more familiar with a long-form delay--prime time/late night, even
daytime later on--of one hour (think Mountain time zone), where with 2"
it was record in 50:00 segments with a 10:00 overlap. When those monster
quads gave way to type B 1" more user-friendly machines, the overlap went
down to 5:00 and at least the first reel of a sequence could record for 55:00
(since you knew the hard start point).
Oh, and your half-hour delay with 1" could be truncated down to record the
net news at 5-5:28:57 PM, wait maybe :03 after "this is CBS," then hit rewind
to your marked zero point on the tape and it was rewound and cued up for
whatever short pre-roll you had by 29:45 (at the latest) to roll for 5:30:00 air.
If you were in Mountain time zone TV "back in the day" it would be interesting
to hear what your station did--sequences/overlaps/backups--in performing the
nightly "in pattern" one-hour delay. I guess it's all a moot point nowadays with
digital delay servers, or in NBC's case, their Mountain zone feed.