Bell System news article from 1961
- One of the TD-2 station pics with the delay lens antennas is part of
this article, from 1961... found this interesting. Also, anyone have any
information on K-carrier?
SERVICE QUICKLY RESTORED AFTER REPEATER STATION BLASTS
Early Sunday morning, May 28, the TD-2 repeater stations at Wendover,
and Cedar Mountain, Utah, and the K repeater station at Knolls, Utah
were blown up and virtually destroyed, interrupting both the central
transcontinental microwave and K-carrier routes. More than 2200
telephone and telegraph circuits and four television channels were
Two thirds of the telephone circuits, all critical services and all TV
and radio circuits were made good by rerouting within a few hours after
the blasts. The radio systems were rerouted around the damaged section
by way of Los Angeles within two hours. By Sunday evening all circuits
affected by the explosions had been made good, using spare facilities
and protection radio channels.
Pre-arranged emergency service restoration plans worked smoothly. In
less than 30 minutes after word was received, men and materials were
moving to the three stations. Portable microwave equipment and
truck-mounted towers were flown to the two radio relay locations.
Despite the high number of circuits blanked out, the effect on traffic
was light. Many military private line circuits were not affected at any
time by the explosions because of alternate routings. Also, many other
private line circuits were individually rerouted with minimum delays.
One two-way TD-2 channel was made available between Salt Lake City
Junction and Los Angeles Tuesday night, May 30, by expediting
installation of new channels that were nearing completion. This released
some of the protection channels that had been used for reroutes.
Portable TE microwave equipment was brought into restore service across
the breaks. By June 2 four TE channels had been set up, two for message
service, one for TV, and one for protection. Five K-1 systems were
restored by cutting the cable through at Knolls and using additional
amplifiers at the adjacent stations.
Temporary buildings have been constructed at the three sites, and a
temporary installation of TD-2 equipment has been made at the two radio
sites to serve until permanent rebuilding can be done. This installation
was completed by June 4. Permanent restoration is expected to be
completed at all three locations before September 1.
As a precautionary measure, National Guardsmen had been posted quickly
at all unattended K-carrier and radio-repeater stations in the area.
They were replaced by Bell System guards a few days later. Many normally
unattended stations in Utah, Nevada and California are continuing to be
attended or guarded.
Matthew, KF4LHP ICQ: 6280641
Web: http://www.qsl.net/kf4lhp/ EMail: kf4lhp@...
Join the ChattRadio mailing list!
- At 11:57 PM 4/19/99 -0500, you wrote:
>From: "Matthew Sadler, KF4LHP" <kf4lhp@...>Type K Carrier - 12 to 60 KHZ SSB over buried cable. 12 channels per
>One of the TD-2 station pics with the delay lens antennas is part of
>this article, from 1961... found this interesting. Also, anyone have any
>information on K-carrier?
carrier. Predecessor to L Carrier. 17 mile spacing between repeaters. See
the History of Engineering and Science in the Bell System (Transmission
Technology 1925 to 1975) page 75 on.
NOTE: Also am looking for a complete or incomplete set of the History of
Engineering and Science in the Bell System. Will pay a reasonable price
for these volumes (3).