In the last several years, very low power (~20-50 mW) Hotspots, which are devices that allow hams to create private links over the internet to digital voice systems, have become very popular. The first Hotspots allowed hams to connect to various D-STAR reflectors, but now similar solutions exist for DMR, P25, etc. With the growing popularity, the inevitable question is raised, “what frequency do I use”?  To address this, the WWARA has set aside several channels in the 70cm band plan in support of these devices. These channels are not coordinated, it is up to the users to select a frequency that does not have or cause interference, following normal Part 97 rules. 

There are two groups of channels defined, one for simplex hot spots, the other for two slot full duplex devices which are typically found in newer DMR hotspots. These channels are to be used on a first come, first served basis with emphasis on sharing to the degree possible. This means running with as little power as necessary to support communications. No individual or group has exclusive use of the frequencies.

Please consider the restrictions in the FCC Part 97 rules concerning the use of these ancillary devices. The channels have been set aside in the band plan for low power, limited range, hotspot devices. Increasing the radiated power (ie. using an external antenna, higher output radios, etc) with the intention of providing a wider area of coverage, transitions the device from a hotspot to a repeater,  which requires coordination.  While this is not mandatory, it is recommended to help minimize interference. 

Simplex Channels

  • 430.4125 Mhz
  • 430.4250 Mhz
  • 439.4125 Mhz
  • 439.4250 Mhz

Duplex Channel Pairs

  • 430.4375 MHz / 439.4375 MHz
  • 430.4500 MHz / 439.4500 MHz
  • 430.4625 MHz / 439.4625 MHz
  • 430.4750 MHz / 439.4750 MHz

NOTE: TX and RX can be swapped as needed to avoid interference