This unit can receive a microphone, or in my case with the adapter, guitar.
It operates in the VHF range around 170 MHz (single frquence not editable)
Two powers of Mission Possible. Prfrez the highest, which dj is not far trs. In my case, there are cuts APRS 15/20 meters.
There are two antennas, but this is not a diversion.
The mission module over an antenna, not ts performance, but in this range
frequency drives, rigid antenna would not very practical.
The autonomy of the 9 volt battery is about 10 hours.

The quality is good, I see no diffrence between this jack and Systm.
But the condition of not too s'loigner the System.

There is also a rglage the cutoff signal. The choice is between the breath or break open.

MODEL This is not the most efficient, but if the distance between your guitar and your equipment is over 15 meters, there is no problem.

Note that this Systm is not sold in France.