Ramsey Electronics FZ-146 Specifications download pdf (Page 138)

FX 146 • 138

good 50 ohm load. Keep these key-down tests as brief as possible.

 TX52. If you are observing at least 4 watts of RF output, transmitter

tuneup is completed. Spread coils L13 and L16 on the main board and

L12 and L22 on the low pass board for maximum RF output. These coils

are purposefully wound with a little too much inductance, so that they

can be easily "peaked" by some spreading. This is probably one of the

most important steps to get the most RF out of your rig.

 TX53. Adjust Modulation control R46 by listening on another receiver or

scanner and simply adjust for best sounding audio. See Test Procedure,

Step 8, regarding FM Deviation.

 Remember that indicated RF output also depends on the accuracy of the

wattmeter and correct DC supply voltage. Our lab measurements

consistently show 4 to 5 watts or better. If your application demands

significantly more RF output, your FX-146 transceiver will drive the

Ramsey PA-146 booster amp (factory assembled with receiver pre-amp)

to its maximum rated outputs in the 35 to 40 watt range.

 TX54. Replace the dummy load with a well designed 2 Meter antenna

and start enjoying the FM transceiver that you built yourself!

IMPORTANT:

It is your responsibility to know what band privileges are granted by

your Amateur Radio License and how to program the frequency

synthesizer correctly within the 144.00 to 148.00 MHz operating range

of the 2 Meter Amateur Band. A proper license is required for

transmitting in this band. Other FCC licensing is required for operation

of this equipment on frequencies outside the Amateur Band. It is illegal

for licensed amateurs or other persons to transmit on frequencies for

which they are not properly licensed.

RAMSEY

ELECTRONICS, INC.

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Ramsey Electronics FZ-146 Specifications Page 138