How to network multiple relay stations

Note: In this scheme, a relay station and a half-duplex radio station are used in area A and area B respectively. Half-duplex radio station adopts the same frequency half-duplex transmission and reception mode, which is only used as a link connecting two regions.

The walkie-talkie is set with two channels, frequency:

1CH TX 150.000 RX 155.700

2CH TX 150.000 RX 155.800

And two channels are set for fast scanning. Because the TX frequencies of the two channels are the same, you can talk no matter which area you search, and there is no need to manually switch channels in any area, thus realizing the function of automatic roaming.

In this scheme, a standard relay station (built-in duplexer) is used in area A, two half-duplex radio stations are used in area B, two antennas are used in the combined relay station in area B, and the interphone is set with three channels:

Area A uses1chtx150.000 rx155.700.

2chtx155.800rx155.100 calls with area a are in area b.

3chtx155.700rx150.100 is the self-relay in area B.

Frequency setting of half-duplex radio station 1:

TX 150.000 RX 155.700

Frequency setting of half-duplex radio station 2:

TX 150. 100 RX 155.800