File:Collins KWM-1.jpg

KWM-1 SPECIFICATIONS:

RF POWER INPUT: 175 watts SSB PEP or 160 watts CW.

OUTPUT IMPEDANCE: 52 ohms with not more than 2.5:1 SWR.

POWER SOURCE: 115 vac 50-60 cps, 12 vdc, or 28 vdc

POWER INPUT: Filaments 5.25 a at 12 v; B+ and Bias:

   Transmit: 800 v at 200 ma; 265 v at 210 ma; - 50 to -80 v at 3 ma
   Receive: 290 v at 170 ma.

SIZE: Transceiver - 6-1/4" h, 14" w, 10" d

   AC Power Supply - 6-1/4 h, 7-5/8" w, 10" d
   DC Power Supply - 7-19/32" h, 10-1/8" w, 5-3/4" d
    Speaker Cabinet - 6-1/4" h, 7-5/8" w, 10" d

WEIGHT: Transceiver - 15 Lbs.

   AC Power Supply - 25 Lbs.
   DC Power Supply - 15 Lbs.
    Speaker Cabinet - 5 Lbs.

FREQUENCY RANGE: 14-30 mc continuous. Choice of any ten 100 kc bands

   by crystal switch. Standard complement of crystals:

     14.0 - 14.1 mc CW
    14.2 - 14.3 mc SSB
    14.9 - 15.0 mc calibration with WWV
    21.0 - 21.1 mc CW
     21.3 - 21.4 mc SSB
    21.4 - 21.5 mc SSB
    28.0 - 28.1 mc CW
    28.1 - 28.2 mc CW
    28.5 - 28.6 mc SSB 
    28.6 - 28.7 mc SSB

FREQUENCY CONTROL: 70K-1 Permeability Tuned VFO

HARMONIC AND SPURIOUS RADIATION: Carrier suppression

    -50 db, unwanted sideband 50 db, oscillators and mixer products
   -50 db, second harmonic
   -50 db, 3rd order products 30 db.

FREQUENCY STABILITY: After 10-minute warm-up, within 100 cps.

   Reset within 1 kc throughout range.

AUDIO CHARACTERISTICS: Response 300 - 3,000 cps

   noise 40 db below one tone carrier;
    transmitter input designed for high impedance crystal or dynamic mike.

PHONE PATCH IMPEDANCE: 600 ohms unbalanced to ground.

CIRCUIT PROTECTION: Primary fuses.

ACCESSORIES REQUIRED: Hi-Z Dynamic or Crystal Microphone and/or
   telegraph key, antenna, loudspeaker and/or headphones,
   516E-1 dc and/or 516F-1 ac power supply

POWER SOURCE: 115 vac 50-60 cps; 12 vdc; 28 vdc.

RECEIVER SENSITIVITY: 1.0 uv for 6 db S/N ratio with 3 kc bandwidth.

NUMBER OF TUBES: 24 plus 2 rectifiers in ac power supply.

NUMBER OF TRANSISTORS: 6 in dc power supply.