FINEST AMATEUR RECEIVER IN ITS PRICE CLASS
The accent is on value . . . with features found only in more expensive receivers. The lowest-priced general coverage receiver available today with exclusive "Microtome" crystal filter, separate product detector for CW and SSB reception. Has big "S"meter. Covers 540 kc to 40 mc in four bands including broadcast band. Voice, CW or SSB. Features smart, new styling.
|1st IF Amp.||6BA6|
|2nd IF Amp.||6BA6|
|1st AF and BFO/S meter amp.||12AT7|
|Det, AVC and ANL||6AL5|
CIRCUIT DESCRIPTION: Eleven vacuum tubes, including a rectifier and a voltage regulator, are used. A superheterodyne circuit is used in which signals from the RF amplifier and local oscillator are heterodyned in the mixer producing a 455 kc IF signal. This mixer product is then amplified by two audio amplifier stages to a sufficiently high level to drive a loudspeaker or headphones. The crystal filter provides six degrees of selectivity. Bandwidth of the crystal filter varies form 3.8 kc to 50 cycles at 6 db points over the six positions of the Selectivity switch. A product detector is used for signal sideband and CW reception. An extremely stable CW oscillator is used for carrier injection.Sufficient oscillator stability for single sideband reception is ensured by power supply regulation and careful circuit design
TUNING SYSTEM: Separate general coverage and bandspread tuning capacitors connected in parallel on all bands. Bandspread, used primarily for tuning the amateur bands, can be used as a vernier for general coverage use. Antenna trimmer is on the front panel.
|A||.54 - 1.6 mc|
|B||1.6 - 4.7 mc||3.5 - 4.0 mc (80 meters)|
|C||4.7 - 15.0 mc||6.9 - 7.3 mc (40 meters)|
|D||14.0 - 40 mc||14 - 14.35 mc (20 meters)|
|20.4 - 21.5 mc (15 meters)|
|27 - 30 mc (10/11 meters)|
AUDIO SYSTEM: Two-stage audio amplifier with single 6AQ5 output tube provides 1.5 watts at less than 10% distortion. A handsomely styled accessory speaker is available. Output impedance 3.2 ohms. Has phone jack.
DRIFT: .01% or less.
SENSITIVITY: Under 1-2 microvolts (10db signal/noise ratio).
SELECTIVITY: 6 positions. Constant Gain.
|6 db||5.2 kc||200 cycles|
|60 db||29.5 kc||10 kc|
Antenna Input: 50-300 ohms, balanced or unbalanced.
Size: 16 3/16" Wide x 10" High x 10 7/8" Deep.
Finish: Handsome Two-tone gray wrinkle finish.
Shipping Weight: Approx. 35 lbs.
Optional Accessories: NTS-1 Loudspeaker, XCU-109 Crystal Calibrator and the NFM-83-50 FM Adaptor.
Only $19.95* down
Up to 20 months to pay at most Receiver Distributors.
*Suggested Price: $199.95**
**Prices slightly higher west of Rockies and outside U.S.A.
Source: 1958 Radio Amateur's Handbook and the National NC-109 manual
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