The Reception Set R 206 MKII, big brother to the R107, is an impressive, high performance, general purpose communications receiver, capable of high resetting accuracy.

It will operate from AC mains of 100 to 240volts, or 12 volts DC, from its own separate PSU No 33.

It is one of the heaviest of the WW2 reception sets at 120 Ibs, plus 50lbs extra for the PSU. Its dimensions are 25" X 13" X 15" deep. A box built into the protective framework inside the set carries a small lorry load of spare valves and parts.

Frequency coverage is 0.55 - 30 Mc/s in 6 ranges covering CW and AM modes. One of several distinguishing features is the large chrome plated band-change handle. Mounted in the bottom right hand comer of the set, it requires two turns to rotate the turret between each band, accompanied by a very satisfying " clonk".

A two-speed dial drive gearbox, incorporating vernier calibrations, helps to give the R206 its high resetting accuracy. There is a calibrated oscillator control for small frequency excursions around the main dial setting.

It has 3 selectivity positions:- Narrow - 0.7kc/s, Medium - 2.5kc/s, Wide - 8.0kc/s, plus an AF filter centred on 900c/s. The Narrow and Medium positions have crystal filters.

The aerial input incorporating a trimmer is designed for operation from 80 ohm coax.

Valve complement, in single conversion superhet type circuit is: RF Amp ARP35; 2nd RF Amp ARP34; Freq. Changer ARTH2; Osc. ARP35; 1st & 2nd IF ARP34; Det/1st Audio AR21; Audio Output VT52; AGC Amp ARP34; AGC Rectifier 6H6; BFO ARP34.

PSU No 33 uses two 6X5 rectifiers and a stabiliser AW2, which is visible through a small window in the front panel adjacent to the loudspeaker:

Adaptor Frequency range No 1, a separate and optional low frequency converter, which takes its power from the R206 PSU, can be used to extend the frequency coverage down from 600kc/s to 50kc/s.