It features 6 crystal controlled channels, covering the possible range of 240 - 300 MHz. Within Australia, the following frequencies are usually fitted:
Channel 1 251.2 MHz
Channel 2 257.4 MHz
Channel 3 252.5 MHz
Channel 4 258.3 MHz
Channel 5 258.7 MHz
Channel 6 253.9 MHz
Channel spacing is not to be less than 100 kHz.
Aerial impedance is 50 ohms, unbalanced. The set is powered by an internal 12volt lead acid battery or via a special battery charger.
Power consumption is 2.6 w on receive and on transmit is 32w on AM, 30w on CW beacon and 39w on MCW beacon.
The transmitter has an output power rating of 2 w unmodulated carrier. The MCW tone range is 300-3000 Hz - internally pre-set. The A.F. input is unbalanced, to suit a carbon microphone.
The receiver has a sensitivity of 5 microvolts. The IF frequencies are 19.05 mHz and 930 kHz. The A.F. output is 2 mw into 300 ohms at 1000 Hz for an input signal of 5 microvolts.
One of the interesting features of the set is the provision of a mast mounted discone antenna, in lieu of the short antenna used in manpack operations.
Crystal frequency formulas are: Tx xtal = f/16 Rx xtal = f - 19.05/16
The set is not readily adaptable for amateur use as the operating modes are rarely used on the 2 metre band, the nearest practicable conversion band.
© Ian O'Toole, 2009. Page created: 28/04/03 Last updated: 3/12/2009