Photo from 1959. Phasing ssb-exiter,
Receiver, using if-filter, built from FT 243 surplus x-stals. Operational all five sh.wave bands. Linear amplifier using a pair of paralelled 4X250's Antennae: 2 element Quard at 30 feet.
Operation: !4 MHz only.
Photo from 1952. 5 band VFO - Driver (large round dial.) Microphone amplifier for phasemodulation on top. Large chassis in the middle, is receiver, based on BC 454 surplus receiver. Raack to the left contain class C amplifier wit 2 Werhmaht RL 12 P 50. Antenne: 40 meter endfed zepp. Licensed in january, 16 years old.
Photo from 1962. In general, same equippment, antenne: 2 element Quard, now at 90 feet.
Bang & Olufsen ribbon mikrophone !
4 600 feet V-beams mainly for 3,5 and 7 MHz.
Various antenna types.
Temporary stop for activity.
90 feet tower remooved - hopefully temporary.
DXCC Phone: 373/340
Transmitter (In fact a transceiver
0 to 30 MHz, output 100 mWatt)
Normally linked to and operating at frequencies, loaded from the receiver.
Synthesized oscillator locked to 10 MHz standard. Input noisefigure:128 - 130 dBm, Input intercept: 29 to 41 dBm.
Built in overload wideband input indicator: On at > -20 dBm. Selectivity: 1 kHz/3 dB, 2,5 kHz/3 dB, 2,2 kH z /3 dB, 6,3 kHz/3 dB. Modes NBFM, AM, SSB (Pass-band tuning). AGC: fast, normal. Squelch: adjustable. 15 memories. Switch : receive/transmit at selected memory. Input signal indicator 0 to 100 uVolt. Frequency dial adjustable 1, 10, 100 hz variable, main frequency input via keyboard. Audio: 10 watt 5 ohm, headphones 5 ohm >. Ant. input: 50 ohm.
Linear amplifier. 1 kWatt PEP output from 1.5 to 30 MHz solid state. Consisting of two three stage push-pull amplifiers. Input about 1 mWatt PEP. Reduced output: -10 dB. low-pass/high-pass filters for reduced intermod. products about - 40 DB (PEP)
At present - no antennas - sorry
Powersupply for linear amplifier. Consisting of four switched mode supplies, delivering 42 V DC at 15 AMPS. each. Input 3 x 220 V AC.