TMC Technical Materiel Corporation MSR-3 Converter
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Single Sideband Converter
The TMC Model MSR, Single Sideband Converter
will, in a
number of ways, improve operation of certain radio receivers
for various modes of operation. The overall skirt
selectivity of most receiving systems is greatly sharpened,
rejecting unwanted adjacent signals or interference with no
detrimental effect to the desired signal. The tuning of
single sideband signals is greatly simplified since the
final tuning is done at the MSR, not the Receiver
mechanical and electrical bandspread tunes over the I. F.
bandpass. This effective vernier easily tunes SSB or exalted
carrier AM signals within cycles of correct tone. Either
sideband is selectable, either with the bandpass tuning
feature or by inverting the osc. separation. CW, MCW and FS
signals are easily tunable with the bandspread feature.
For extreme stability, the first Oscillator
is switched to
crystal control for both upper and lower sideband positions.
The local or remote tuned VFO feature of the MSR permits
operation with any Receiver
having an I. F. nominally
centered at 455 kc. > However, when the Oscillator
switched to crystal control and the proper crystals
inserted, most any Receiver
I. F. may be accommodated. The
required I. F. connection between the Receiver
through a low loss coaxial cable is as follows:
AN/FRR-49(v) to MSR, BNC connector to BNC. R-840/URR to MSR,
Phono connector to BNC. R-390/URR to MSR, BNC connector to
BNC. R-274B/URR to MSR, UHF connector to BNC.
The audio output is available in three levels:
1. 2 watts for 600 ohm line or 8 ohm loudspeaker.
2. 150 milliwatts for 600 ohm line or 8 ohm loudspeaker.
3. 0 dbm/1 milliwatt for 600 ohm telephone line.
'Terminals at the rear panel provide the simple connections
fbr remote control of the main features of the MSR without
modifications or the use of additional lines or tones when used
in the TMC RCR system. By this means it is possible to
remotely or locally tune the MSR across the Receiver
passband, select sidebands with a remote indication of which
sideband is in use, and still retain all of the remote
control features of the RCR system.
Servizio e manuale utente
Tipo di manuale:
Servizio e manuale utente
3.61 Mbytes (3782533 Bytes)
ID del manuale:
30 ottobre 1958
Documento scansionato, tutto leggibile.
11 giugno 2014