RBA-03 | Aviation Rx | AM, 110÷138MHz

AM superhet. receiver (options: KIT |  assembled& aligned PCB). Freq. coverage from 110-138MHz (BB405 varicap tunning). LO is implemented with internal oscillator circuitry and external coil (L2) and tunning circuitry (D3). Very stable VFO, quality audio. Potentiometers (squelch, volume, tune) are included, in all buy options. It works with 9V battery. You will receive printed schematic diagram in the package which is also available at “Downloads” below. Design © copyright (schematic & layout): Rodrigo R. Ribeiro. Antenna example and pilot/controller glossary terms and other resources available for free at “Videos” & “Downloads” section below! If you are interested in a “ready to use with case” version, please contact us using WhatsApp chat or direct email!

Options:

a) KIT – all parts needed to build the radio, except: speaker, battery, telescopic antenna, case, on/off switch, knobs for potentiometers. L1 & L2 coils are included in the KIT. You will need an enclosure for it.

b) assembled, tuned & tested: the board is ALREADY tuned and coils adjusted, ready to be wired to the on/off switch, battery, speaker etc. The assembled board is fully functional. You will need an enclosure for it.

General specifications:

– sensitivity: 3µV
– comercial airband coverage: 110-138MHz, AM (amplitude modulation)
– TUNE control: 1 x 10k singleturn potentiometer
– SQL potentiometer: 1 x 50k log.
– VOL. potentiometer: 1 x 10k log.
– required speaker: 4Ω/1W or 8Ω/1W, max. 5cm diam.
– LED for “squelch” activation status