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Appendix A: Setting the Wireless EarAmp™
Radio Frequency
The Samson Wireless EarAmp® is extraordinarily frequency-agile, offering more than 128 different radio
frequencies and two different modes of operation. In Group/Channel mode, you can access a
factory-programmed channel plan (see Appendix B on the following page) that allows you to use up to
sixteen different systems together at the same location (assuming all frequencies are available).
Alternatively, Frequency mode allows you to directly “dial in” any radio frequency between 614.35 and
662.0 MHz, in 25 kHz increments. Either mode can be used when only one Transmitter (with any
number of receivers) is being utilized; however, in locations where more than one Transmitter is used,
we strongly advise the use of Group/Channel mode. Note that Group numbers correspond to U.S. TV
channel numbers, making it easy to select a known vacant channel.
To set the Wireless EarAmp® radio frequency in Group/Channel mode:
1. Press the transmitter’s front-panel CH. (Channel) button (this sets Group/Channel mode).
2. Press the front-panel CH. (Channel) and FREQ (Frequency) buttons simultaneously. The word
“Group” in the display will begin flashing.
3. Use the UP/DOWN buttons to select the desired Group, from 38 to 45 (these correspond to U.S.
TV channel numbers). Note that, if you make no selection within five seconds, the word “Group”
will stop flashing.
4. If the word “Group” is still flashing in the display, press the Channel button to stop it flashing.
Use the UP/DOWN buttons to select the desired Channel (from 1 to 16) within the selected
Group. The bottom line of the display shows the actual frequency of that Channel (see the
Channel Plan in Appendix B on the following page).
5. In the receiver, turn the Program switch off, then on (towards the “up” arrow) and then, within ten
seconds, press and hold the transmitter’s front-panel Program button for at least three seconds,
until the TX LED on the receiver flashes. This confirms that the receiver is set to the same
radio frequency as the transmitter.
6. The TX LED in the receiver will always light steadily green when it is correctly set to the same
frequency as the transmitter and is receiving pilot tone. If it does not do so, reprogram it
(following step 5 above) until you see the TX LED flash.
To set the Wireless EarAmp® radio frequency in Frequency mode:
1. Press the transmitter’s front-panel FREQ (Frequency) button (this sets Frequency mode).
2. Use the UP/DOWN buttons to select the desired Frequency, from 614.350 MHz to 662.000 MHz.
Each press of the UP/DOWN button increments or decrements the frequency by 25 kHz. Press
and hold down the UP or DOWN button to rapidly increase or decrease the frequency.
3. In the receiver, turn the Program switch off, then on (towards the “up” arrow) and then, within ten
seconds, press and hold the transmitter’s front-panel Program button for at least three seconds,
until the TX LED on the receiver flashes. This confirms that the receiver is set to the same
radio frequency as the transmitter.
4. The TX LED in the receiver will always light steadily green when it is correctly set to the same
frequency as the transmitter and is receiving pilot tone. If it does not do so, reprogram it
(following step 5 above) until you see the TX LED flash.
Note that both the transmitter and receiver in the Wireless EarAmp® system always retain their RF
settings even after being powered off—in the case of the receiver, even after the battery is removed.
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