The R109A was my first real Communications Receiver, purchased in 1969 for £1.50p from a local shop who sold lots of ex government stuff.
Frequency Coverage:- 2.0 to12.0 Mc/s in 2 bands. Band1:- 2.0 to 4.9 Mc/s. Band 2:- 4.0 to 12.0 Mc/s. Both these bands are directly calibrated on a very good slow-motion dial. An internal speaker is fitted and can be switched out when headphones are being used, in addition the receiver has a BFO for CW reception and also a crash-noise limiter of the simple type.
Power Supply:- The power supplies are incorporated in the receiver, which is designed to run from a 6 volt accumulator, it therefore has a vibrator HT pack, giving a well smoothed and filtered 150 volt HT. With a 6 volt battery supply the load is 2 amps. Valves: The receiver uses three different valve types. The valve sequence is as follows:- RF, ARP38; Mixer, ARP12 (VP23); Oscillator, ARP12; 1st and 2nd IF amp., ARP12; Detector and Audio, AR8 (HL23DD); Output amp., AR8.
My R109A was powered by a 6v motorcycle battery with a battery charger constantly charging!
The Hallicrafters SX 24 ‘Skyrider Defiant’
ReceiverManufactured in the USA, 1939-1943. I acquired this receiver from a friend who later became a Radio Amateur. A superb receiver, covered 0.54-43 MHz but was rather insensitive above 20MHz. The receiver had a lovely bandspread dial with a large flywheel behind which gave smooth tuning on HF. Selectivity was switched to diferent bandwidths including a CW filter with a ‘phase’ control. Spent a lot of time modifying the receiver, changing old capacitors and such. Mains Transformer melted so had to fit an alternative one, also blew up one of the IF Transformers by shorting one end with my test meter probe by accident. Pity, the replacement never worked as well! Used it a lot with converters on 2m and 4m with an IF of 1.8MHz to 3.8MHz.
The WS 38 Set MK III
Bought this little rig to listen on 40 meters. I never did get the Transmitter to work! The ‘Transmitting Valve’ was an ATP5, I know this because the man in the shop removed it because I wasn’t old enough to have a transmitter! The power for this rig required a separate 3v for the valve heaters and 90v to power the receiver. In fact I got the receiver running using a 3v torch battery and a big 90v radio battery (which cost a fortune). The receiver worked well on 40m, I remember logging loads of stations during a contest with an external signal generator as a BFO. Only covered one band 7.0MHz – 9.0MHz. but a sensitive little beasty!
The Roamer 7
My very first radio!
The ‘Roamer 7’ bought as a Christmas present in kit form when I was 14, really enjoyed building it!
7 Bands, MW1, MW2, LW, SW1, SW2, SW3 and Trawler Band. Was in fact a Super-regen receiver, the Volume Control doubled as a Regen Control causing the radio to burst into oscillation.
Listened to 160m (Topband) on Trawler Band and heard my first Radio Amateurs! Cost: £5.19.6p.
The Yaesu FT-101E
This has been the hub of my station for over 20 years! What can I say – a wonderful rig! Acquired in 1980 and still here today, although has now been replaced by the Yaesu FT-817 in the shack.
As well as HF the FT-101E formed the driver / tunable I.F. for transverters on 50Mhz, 70Mhz, 144MHz, 432MHz and 1296MHz. With it’s internal 12v inverter PSU the FT-101E worked great for portable and contest operation.
This base station radio is superbly engineered, offering transmit and receive on the main HF amateur bands, but also full operation on 160m, 30m and 11m. It has a fitted 600 Hz CW filter.
Key features include: LSB, USB, CW, and AM modes, RF speech processor, IF noise blanker, rugged PA (2 x 6JSC6’s), internal 12V and 200-234V power supplies, and many I/O ports for transverters, external VFO, linear, separate receive antenna, data, etc.
Frequency range: 1.8 – 2.0 MHz, 3.5 – 4.0 MHz, 7.0 – 7.5 MHz, 10.0 – 10.5 MHz, 14.0 – 14.5 MHz, 21.0 – 21.5 MHz, 26.9 – 27.5 MHz, 28.0 – 29.9 MHz
Power: SSB 280W input, CW 180W input, AM 80W input
Rx Sensitivity: 0.3 uV for 10 dB S/N