PROCASTER AMTX100 AM Transmitter
Installation and Operation
Page 5 of 9
Step 9. Power Up the Procaster
™
Connect the AC wall adapter.
Step 10. Choose Channel Frequency
To choose the desired broadcast channel, refer to the Option Switch section. Note: the option
switch also allows additional settings to be made.
Step 11. Tune Antenna
Once the broadcast channel is set, turn the antenna tuning capacitor using a small bladed
screwdriver until a maximum reading is seen on the tuning meter. Make sure to stand clear of the
antenna as body capacitance will affect tuning. If the reading is not "sharp" and strong, re-check
your ground connection.
(tuning)
Antenna tuning is now complete. (Now that was easy!)
Step 12. Final Checkout & Adjustments
Check your sound level and range by listening on a radio. The broadcast signal should be clear
and strong when closer to the transmitter, with more noise heard the further you move away.
The built-in audio processor is what makes the PROCASTER™ sound like a big station. If you
want to use your own external audio processing equipment, the PROCASTER™ audio processor
can be disabled by changing the option switches.
The PROCASTER™ audio processor can be adjusted to suit personal preferences as follows:
Compression:
Turning the compression control CW boosts quieter parts of the audio to be
more equal to the louder parts. This makes the overall audio louder resulting in a stronger signal
and greater range. The tradeoff is the subjective audio quality depending on the level of
compression.
Modulation Depth:
Turning the modulation depth control CW increases the audio
modulation level of the AM signal.
Limiting:
Limiting is automatic to prevent sideband 'splatter' and both the above adjustments
have no affect on the 'hard limiter' built into the audio processor.
Congratulations! You have set up your broadcast station.
