HFM 3-S modules are approved for use in all PROFI mc-series transmitters

Owners of PROFI-series transmitters who install this module can quickly and easily

change channels (spot frequencies) using two rotary switches, eliminating the need

for plug-in transmitter crystals. Can be used with receivers fi tted with plug-in crystals

as well as Synthesizer receivers.

      Synthesizer RF module HFM-S 40/41MHz     #45694

The HFM-S Synthesizer RF module is the alternative to the HFM-4 crystal RF module for

all ROYALevo transmitters. No plug-in transmitter crystals are required, as the channel

is selected simply and conveniently by software: just set your desired frequency using

the channel select menu on the transmitter. The HFM-S module can be fi tted to the

transmitter at any time; the transmitter then detects the module automatically when it

is switched on. An optional Scanner module for the HFM-S module can also be fi tted

(# 4 5170 / 4 5171).          

      Transmitter crystal FM     #162000

Crystals are precision components cut from artificially “grown”

crystals, and are employed to determine the frequency on

which transmitting and receiving equipment operates.

At MULTIPLEX we have crystals manufactured to our own

specification. Our transmitters and receivers are designed

to match these specifications exactly, and you can only

obtain optimum effective range using this combination of

components.