This is a small superhet phone TCVR for any single band 20 to 160m. Its small size will appeal to those wanting a phone rig for /P operation. Though NOT electrically very complex, the 100 mm square main PCB is very full - hence in this category! Many extras can be added - digital readout, speech processor, CW and Meter kits, and the 10 Watt Linear Amp. On the lower bands, the VFO frequency alters with each band and coverage is divided into 3 sub-bands for a low tuning rate on the variable capacitor. Higher bands are possible with the Mixer kit. It is a bi-directional superhet with an IF amp that is used on receive and transmit; the 6 MHz 5 crystal ladder IF filter is followed by a conventional detector and audio stages. Minimum supply is 8 volts but on 13.8v the TX produces 1.5 Watts. Low pass filters are included. Suits low Z mikes Supplied with all parts for open construction and looks like the Compton with a very full PCB! Price £79
Photo of the Fivehead with the 10W Linear attached at the rear:-
This is the new top of the range rig - it will be available soon! It starts as a single band 5W phone SSB transceiver for any band 20 to 80m on a 100 x 160 mm double sided PCB; to this you will be able to add a second PCB with the Minster 'RF extras' - which will add ANY two extra bands (10 to 160m). CW operation with specialised CW filters, AGC, RIT etc are provided by a new Audio Extras kit. Thus it becomes an any three band phone SSB and CW TCVR! I regret there is still quite a bit of proving and writing of the instructions yet to be done! I shall be delighted to hear from any potential early builders.
Home Page, List, Simple, Intermediate, Accessories, Ordering