Collins
Collins 75A-1 Amateur Band Receiver in Excellent Condition Working
- MPN:
- 75A-1
- Condition:
- Used
- Shipping:
- $100.00 (Fixed Shipping Cost)
Description
This Collins 75A-1 Amateur Band Receiver in Excellent Condition and Working Great.
You will be hard pressed to find a cleaner and nicer example of a 75A-1 receiver!
I powered this receiver up and put it on the air and it receives well on all the bands and seems to function as it should.
As with most vintage gear it may be improved with an alignment or tube replacement.
This receiver is part of a collection of a client who has been collecting vintage gear for many years and is selling due to having to move.
I am very proficient packing this type of vintage gear and I purchase the correct Double wall boxes and packing material to assure safe shipment.
The shipping quote should be close but if it is less I will refund the difference.
Shipping is at the risk of the buyer for any amount insurance does not cover.
I will provide an excellent copy of the manual
Save the shipping cost by picking up this item near Green Bay, Wisconsin.
Around 1947, the company introduced their first amateur radio receiver, the 75A-1 (called the 75A). This set achieved excellent stability for the time due to high build quality and the use of a permeability tuned oscillator (PTO) in its second conversion stage. It was one of the few double conversion superheterodynes on the market and covered only the amateur bands.
With the experience gained in the design of the 75A-1, Collins released the 51J-1 receiver, a general coverage HF set covering .5 to 30 MHz. It would be produced in somewhat updated versions (51J-2, 51J-3, 51J-4) for about a decade. It was known as the R-388 and was used in multiple receiver diversity RTTY installations.
The 75A amateur line was updated throughout the early 50s, finishing with the 75A-4, which was released in 1955. The Collins mechanical filter was introduced to consumers in the 75A-3, and the 75A-4 was one of the first receivers marketed specifically as a single sideband receiver.
Amateur Band Communications Receiver | Rating (1-5): HHHHH (5) |
Made In: United States 1947-1950 | Voltages: 115 VAC 50-60 Hz |
Coverage: Ham. See Comments. | Readout: Analog Lin. |
Modes: AM/CW/MCW | Selectivity: 4-.2 kHz 5 steps |
Circuit: Double Conversion Superheterodyne. 14 Tubes. | Physical: 21.125x12.25x13.9" 57 Lbs. 536x311x352mm 25.8 kg |
Circuit Complement: 6AK5 RF Amp, 6SA7 1st Mixer, 6SK7 IF Amp, 6L7 2nd Mixer, 6AK5 Crystal Osc, (2) 6SG7 500 kHz IF Amp, 6H6 Detector/NL, 6SJ7 AVC, 6SJ7 BFO, 6SJ7 1st Audio Amp, 6V6 Audio Power Amp, 6SJ7 VFO and 5Y3GT Rectifier. Uses 70E-7 sealed VFO. IF 1500-2500, 500 kHz. | |
Features: • ¼" Head. Jack • S-Meter • ANL • Hinged Cover • RF Gain • BFO • Mute • AVC ON/OFF • Dial Lamp • Standby • Fiduciary Adj. | |
Accessories: 353C-14 1.4 kHz Mechanical Filter Adapter, 270G-1 Speaker, 353C-31 3.1 kHz Mechanical Filter Adapter, 307E-1 Gear Reduction Knob, 353C-60 6 kHz Mechanical Filter Adapter | |
New Price: $375 | |
Comments: One view is that the 75A-1 was simply referred to as the Collins 75A until the 75A-2 came out in 1950. Another theory suggests that a small run of less than 200 75As were made in 1946. Ranges: 3.2-4.2, 6.8-7.8, 14-15, 20.8-21.8, 26-28 and 28-30 MHz. Only the band in use is illuminated. Dial accuracy is to 1 kHz (2 kHz above 26 MHz). Virtually no backlash. St. James gray wrinkle finish. Requires a speaker. |