Allied SX-190 Shortwave Receiver With Matching Speaker - Powers On

The Allied SX-190 receiver is a solid state shortwave receiver with 11 bands, each of which covers a 500 KHz segment. An equivalent ham-bands receiver was sold as the AX-190. The bands for the SX-190 are determined by the frequencies of 9 crystals which come with the set and 2 open crystal slots for two additional 500 KHz ranges with crystals that can be added by the owner, one between 3.5 and 10 MHz and a second between 10 and 30 MHz. The AX-190 comes with 10 crystal positions occupied and only one open slot which must be in the 3.5 to 10 MHz range.
The shortwave and the ham-band versions are electrically identical except for the crystals. The sets use a tunable IF heterodyned with the crystal oscillators. A sharply tuned preselector is used for the front end. The second IF is fixed at 455 KHz using mechanical filters. The sets can be found branded as either Allied or as Radio Shack Realistic. Each has a built-in Q-multiplier and can receive AM, CW, and SSB at a sensitivity of 1 microvolt for AM and 0.5 microvolt for SSB.

Made in Japan, the SX-190 and its AX-190 ham counterpart were offered from late 1971 to 1973. These were highly rated when introduced, considered the best-ever Allied receivers. They are still considered excellent analog-tuned receivers. Frequency read-out is quite good. A dial reading of zero to 500 is the value in kilohertz to be added to each band-switched frequency setting. The crystals for each band are 2920 KHz plus the base frequency of interest. For example, the 3.5 MHz band crystal would be 2920 + 3500 = 6420 KHz. Both the SX-190 and the AX-190 cover the 80, 40, and 20 meter ham bands, 11 meter CB, and WWV at 15 MHz in the 19 meter band. The SX-190 also covers the 49, 31, 25 and 16 meter shortwave bands while the AX-190 covers the 15 meter ham band and four segments of the 10 meter ham band.

Electronics & Computers, Other

18%

Rich Monaco II | (203) 627-7651 | theauctionaut@gmail.com

Pickup Details

Private Residence

North Branford, CT 06471

When to Pickup

Saturday, 3/25, 10:00 am to 2:00 pm

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