Note
Allied Radio catalog 1969 (copyright 1968), p. 170.
Allied Radio catalog 1970 (copyright 1969), p. 169.
Allied Radio catalog 1971 (copyright 1970), p. 213. (A-2515A)
The Allied A-2515 is a solid-state, 5-band communications receiver covering from 150 kHz to 30 MHz.
Features
– Dual Dial Tuning: Features independent Main Tuning and Bandspread controls for fine frequency resolution on crowded ham and shortwave bands.
– Signal Metering: Includes a illuminated S-Meter to assist with signal strength readings and precise tuning.
– Noise Suppression: Built-in Automatic Noise Limiter (ANL) switch to reduce impulse noise interference.
– BFO / Product Detector: Dedicated Pitch/BFO control and SSB/CW detector modes for clear reception of suppressed-carrier single sideband and code signals.
– Receiving Modes: AM, CW and SSB.
Specifications & Features
Frequency Coverage
Band 1: 150 - 400 kHz
Band 2: 550 - 1600 kHz
Band 3: 1.6 - 4.8 MHz
Band 4: 4.8 - 14.5 MHz
Band 5: 10.5 - 30.0 MHz
– Modes: AM, CW, SSB
– Antenna Impedance: 50 to 500 ohms unbalanced
– Sensitivity:
AM: 2 µV for 10 dB S/N (at 10 MHz)
CW/SSB: 1 µV for 10 dB S/N (at 10 MHz)
– Selectivity: 4 kHz at -6 dB, 15 kHz at -50 dB
– IF: 455 kHz
– BFO: 455 kHz Variable
– Audio Output: 1.5 W Maximum
– Speaker Impedance: 4 or 8 ohms
Semiconductor Complement
Q101 2SK19 FET RF Amplifier
Q102 2SK19 FET Mixer
Q103 2SC372 Local Oscillator
Q104 2SK19 FET 1st IF Amplifier
Q105 2SC372 2nd IF Amplifier
Q106 2SC372 Product Detector / BFO
Q107 2SC372 1st Audio Amplifier
Q108 2SC372 Audio Driver
Q201, Q202 2SB471 (2) Audio Power Output
Q109 2SC372 S-Meter Amplifier
D101 1N60 AM Detector / AGC Rectifier
D102 1N60 ANL (Automatic Noise Limiter)
D103 1N60 Meter Rectifier
D104 1S109 Voltage Regulator
D105 1S109 Meter Protection Diode
D106 1S109 Zener Diode
D201, D202 1S109 (2) Noise Rectifiers
D203, D204 1N4002 (2) Power Rectifiers
Power Requirements:
117 VAC, 50/60 Hz, 7.5 watts
12 VDC , 4.8 watts
References
Brief description. Popular Electronics, Nov 1968, p. 24.
Brief description. Electronics World, Dec 1968, p. 85.
Brief description. Ham Radio, Jan 1969, p. 72.
