Satisfactory operation of this Trans-citer depends on several factors. Before removing a
transmitter which is performing in an unsatisfactory manner, carefully inspect antenna connection,
power cables and plugs, the storage battery and its connections (if a vehicular installation), the
AC power source (if operated at a fixed location), and the microphone and relay.connections. It
is an aggravating waste of time and effort to remove and attempt to service a transmitter when the
trouble is an external one.
Antenna. If the Trans-citer is functioning properly but does not load look for a broken
antenna lead, bad relay contacts or inoperative relay, shorted transmission line or antenna
insulator.
Storage battery. Check periodically the terminal voltage, specific gravity, level of electrolyte,
and the tightness of connections. Check the battery voltage at the Trans-citer power
plug with the Trans-citer operating and drawing full load.
Cables and plugs. The initial installation should locate all cables and plugs where they will
not be exposed to physical shock or subjected to twisting and bending.
3.2 TUBES.
Even though modern methods produce more reliable tubes than ever, the first source of trouble
is likely to be a defective tube. Tube failure will produce low grid drive, low plate current,
intermittent operation, or a completely dead transmitter. Where a tube change is made in the R.F. portion
of the Trans-citer it should be replaced with the same make of tube. If this is not possible the circuits
may have to be realigned according to paragraphs 3.5 and 3.6 of this section.
3.3 CIRCUIT FAILURES.
Excluding tubes, the most common source of circuit failure, will invariably be
found in the many resistors and capacitors within the Trans-citer. A defective resistor or condenser
can usually be found by a point-to-point continuity test, although a careful visual inspection will
often show the defective part, such as a charred resistor. The operating voltage chart on page 14
permits a careful check of operating elements. All measurements are taken with the final plate
OFF, bandswitch in the 80 meter position, VFO set to 3.8 megacycles, final grid current resonated
for maximum grid current, crystal-VFO switch in VFO position, and audio gain control on minimum.
A 20,000 ohms per volt meter is used. (DO NOT use a vacuum tube voltmeter since it will
read erroneously in an R.F. field). These measurements were taken using a PS-2V power supply
and a line voltage of 117 volts AC. Any power supply can be used that will give the same high
voltage.
3.4 GENERAL ALIGNMENT INSTRUCTIONS.
Thoroughly familiarize yourself with the layout of all coils
and tuning adjustments as shown on drawing #216, page 16, before beginning an alignment. Check
all brass slug adjusting screws to make sure that they are not worn so much that they will not hold
their setting. If they are too worn to be serviceable they must be replaced.
Check the pointer to see that it is aligned properly with respect to the stops on the VFO dial.
Check to see that the sprocket and chain are tight on the switch shafts and that the switches are
all in their proper position.
You will need an accurate receiver and an accurate signal generator and/or crystals to spot the
amateur band edges.
An alignment job can never be any better than the equipment with which the Trans-citer was aligned.
3.5 VARIABLE FREQUENCY OSCILLATOR ALIGNMENT.
Turn the meter switch to the left "G" position final off.
Set bandswitch lever to the 80 meter position
Set VFO-crystal switch to the VFO position
Set the VFO dial to 3.5 megacycles.
Set signal generator at 3.5 megacycles tune receiver to 3.5 megacycles.
Apply plate power to VFO.
Adjust screw #1 until a beat is.obtained at 3.5 Mc.
Set the VFO dial to 4.0 megacycles.
Set signal generator and receiver to 4.0 megacycles.
Adjust trimmer #2 for a beat at 4.0 megacycles.
Readjust at 3.5 megacycles, then again at 4.0 megacycles.
It may take several excursions between 3.5 and 4.0 megacycles before a good alignment is achieved.
The 160 meter band will automatically be correct after the 80 meter band is correctly aligned.
Set the bandswitch lever to the 10 meter position.
Set the VFO dial to 29 megacycles.
Set the signal generator and receiver to 29 megacyles.
Adjust screw #3 until a beat is obtained at 29 megacycles.
The remainder of the 10 meter band should be correct.
The 40 meter band will be correct after the 10 meter band is aligned.
Set the bandswitch lever to the 20 meter band.
Set the VFO dial to 14.2 megacycles.
Set the signal generator and receiver to 14.2 megacycles.
Adjust trimmer #4 for a beat at 14.2 megacycles.
The remainder of the 20 meter band should be correct.
The 15 meter band will be correct after the 20 meter band is aligned.
3.6 BUFFER -- DRIVER ALIGNMENT.
Turn meter switch to the left "G" position, final off.
160 meters.
Set bandswitch lever to the 160 meter position.
Set VFO-crystal switch to the VFO position.
Set the VFO dial to 1900 kilocycles.
Set the final grid tuning condenser at about the half capacity position.
Adjust screw #11 for maximum grid drive as shown on the meter.
80 meters.
Set bandswitch lever to the 80 meter position.
Set VFO dial to 3.75 megacycles.
Set final grid tuning condenser at about the half capacity position.
Adjust screw #12 for maximum grid drive as shown on the meter.
40 meters.
Set bandswitch lever to the 40 meter position.
Set VFO dial to 7.2 megacycles.
Set final grid tuning condenser at about the half capacity position.
Adjust screw #10 for maximum grid drive as shown on the meter.
15 meters.
Set the bandswitch lever to the 15 meter position.
Set the VFO dial to 21.3 megacycles.
Set the final grid tuning condenser at about the half capacity position.
Adjust screw #8 and #9 for maximum grid drive as shown on the meter.
20 meters.
Set the bandswitch lever to the 20 meter position.
Set the VFO dial to 14.2 megacycles.
Set the final grid tuning condenser at about the half capacity position.
Adjust screw #5 for maximum grid drive as shown on the meter.
10 meters.
Set the bandswitch lever to the 10 meter position.
Set the VFO dial to 28.5 megacycles.
Set the final grid tuning condenser at about the half capacity position.
Adjust screw #6 and #7 for maximum grid drive as shown on the meter.
11 meter band operation is possible using crystal control only.
If 11 meter operation is desired, set the bandswitch to the 10 meter position. Insert the proper
crystal into the crystal socket and set the VFO-crystal switch to the corresponding position and
adjust the final grid tuning condenser for proper grid drive. Tune up the final plate and loading
condenser just the same as for 10 meters.
NOTE: When tuning the buffer and driver slugs it is well to use a grid dip meter or wave meter
to make sure all the coils are tuned to the proper bands or harmonics.
3.7 WARRANTY.
This Trans-citer has been carefully tested and was shipped from the factory in perfect
operating condition. If the set arrives damaged in transit, it is important that you file claim
immediately with the carrier.
THE MULTI-PRODUCTS COMPANY, warranting this Trans-Citer to be free from defective material
and workmanship, agrees to repair or replace, without charge, any defective unit or accessory
within 90 (Ninety) days from the date of sale to the original purchaser, providing the equipment is returned
to the manufacturer properly packed and shipped prepaid by the owner. All such articles
returned under this warranty, must be preceded or accompanied with a letter outlining the defects.
Any failure of the equipment following modification by the user, or occurring through application of
power supply voltages other than those specified in this instruction manual shall not constitute a
defect within this warranty.
This warranty shall not be in effect if the owners registration card is not properly filled out with the
model number, serial number, purchase date, from whom purchased, and forwarded to the MULTI-
PRODUCTS COMPANY.
The manufacturer reserves the right to make any changes in this unit without obligating itself with
respect to prior production.
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