Introduction; The Standard Horizon Hx300 Floating Handheld Vhf Radio - Standard Horizon HX300 Programming Manual

1 Introduction

1.1 The Standard Horizon HX300 floating handheld VHF radio
The Standard Horizon HX300 floating handheld VHF radio can be programmed with
extra VHF "user channels" as required. When adding "user channels" to the radio,
please take great care not to transmit on frequencies on which you are not licensed to
operate. The official frequency ranges for the HX300 are listed as follows [9]:
Transmit (TX): 156.025 to 157.425 MHz
Receive (RX): 156.050 to 163.275 MHz
Actual use has proven that the unit is capable of receiving and transmitting on a
wider frequency range, including frequencies in the 145 MHz amateur radio band. The
actual unit on which this test has been performed, is labeled HX300E, serial number
JB3B060xxx. Section 3.1 mentions possible bandwidth limitations in radios destined for
the US market.
NOTE: When reading the memory contents from the HX300 and other Standard
Horizon radios, channels/frequencies outside the above specified frequency ranges
have the kHz-portion zeroed out. E.g. user-programmed channel L1 (Nordic plea-
sure craft channel 1 at 155.500 MHz) will download as 155.000 MHz.
It has not been determined whether this behavior is caused by radio
firmware/EEPROM limitations or the PC-side CExxx PPS software.
http://www.annoyingdesigns.com/HX300 2