Hammarlund HQ-170

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The Hammarlund Manufacturing Company was founded by Oscar Hammarlund in New York City in 1910. The first Hammarlund plant manufactured radio components and was located on Fulton Street in lower Manhattan.. Their variable capacitor designs quickly became industry standards, and the company adopted the capacitorís schematic symbol as its logo. Hammarlund formed a partnership called Hammarlund-Roberts Co. in the mid 1920íspecifically to offer kits for AM Broadcast radios using Hammarlund parts.

Hammarlund-Roberts went out of business in 1931 and the Hammarlund Mfg. Co., Inc. introduced of the "Comet Pro", the first commercial shortwave superheterodyne receiver. Within five years, thousands of these receivers were in use at commercial radiotelegraph and radiotelephone stations, aboard ships and by amateur radio operators the world over.

After the Comet-Pro came an improved receiver, called the Super-Pro (the SP-200 series in 1936. Hammarlund expanded with the onset of World War II, with more than 2000 people employed at 14 different plants. It has been estimated that almost 90% of American wartime military electronic equipment employed Hammarlund capacitors. At the end of World War II, surplus Super-Pro receivers at bargain prices were readily available, which may be a reason why so many of these are still survive today.

In 1947, the SP-600 Super-Pro receiver, which surpassed the SP-200 in performance, was introduced. It covered 540 kHz to 54 mHz with a 0-100 calibrated mechanical band spreadand had provisions for optional crystal control of six selected frequencies. Also produced, was a VLF version, which tuned from 10 kHz to 540 kHz. The SP-600 receiver series was popular throughout the world for military, laboratory and commercial uses.

While Hammarlund was most famous for its amateur/short-wave receiver lines such as the Super Pro series and the HQ series (which includes the HQ-100, 110, 120, 129, 145, 150, 160, 170, 180, 200 and 215) it also produced a number of amateur transmitters. In 1960 the HX-500, a 100 watt, table-top, single-sideband transmitter was introduced.This rig also had FM and FSK transmission capability, along with the later HX-50. The HXL-1 was a compact linear amplifier introduced in 1964.

The company changed ownership often. In the late 1950s Hammarlund was sold to Telechrome. Then Telechrome sold out to Giannini Scientific. In the late 60ís the company was sold to the Electronic Assistance Corporation (EAC). The product line was either sold off in parts or phased out. The Cardwell Condenser Corporation purchased all remaining components, and in the early 1970s the Hammarlund factory closed. At the time of its demise, Hammarlund was among the very oldest producers of radio equipment in the United States.

More information on Hammarlund:
Wikipedia reference on Hammarlund
Ham Radio Museum - Hammarlund

Hammarlund HQ-170 EBay Bargains!

HAMMARLUND  HQ-170  TUBE  KIT
HAMMARLUND HQ-170 TUBE KIT
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Hammarlund HQ-170 Ham Radio Receiver with Speaker
Hammarlund HQ-170 Ham Radio Receiver with Speaker
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HAMMARLUND  HQ-170A  TUBE  KIT
HAMMARLUND HQ-170A TUBE KIT
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Reprint Radio Manual Hammarlund HQ-170 Receiver Lo
Reprint Radio Manual Hammarlund HQ-170 Receiver Lo
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Hammarlund HQ-170 One Seventy Ham Radio Receiver M
Hammarlund HQ-170 One Seventy Ham Radio Receiver M
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ORIGINAL Hammarlund HQ-170 Receiver Technical Desc
ORIGINAL Hammarlund HQ-170 Receiver Technical Desc
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Vintage Hammarlund HQ-170 (HQ-170C) Ham Radio Rece
Vintage Hammarlund HQ-170 (HQ-170C) Ham Radio Rece
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A NIB tube set for your Hammarlund HQ170 & 170
A NIB tube set for your Hammarlund HQ170 & 170
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Hammarlund HQ-170 Receiver Dials / Meter Trim w/ M
Hammarlund HQ-170 Receiver Dials / Meter Trim w/ M
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Vintage Hammarlund HQ 170 One-Seventy Shortwave Ha
Vintage Hammarlund HQ 170 One-Seventy Shortwave Ha
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Hammarlund HQ-170 Face Plate Only For Ham Radio Re
Hammarlund HQ-170 Face Plate Only For Ham Radio Re
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Hammarlund HQ-170A Receiver Primo Tube Set 6AQ5
Hammarlund HQ-170A Receiver Primo Tube Set 6AQ5
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Hammarlund HQ-170 Receiver Primo Tube Set 6AQ5
Hammarlund HQ-170 Receiver Primo Tube Set 6AQ5
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HAMMARLUND HQ-170 AC
HAMMARLUND HQ-170 AC
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OEM Hammarlund HQ-170 Receiver RF Gain & Power
OEM Hammarlund HQ-170 Receiver RF Gain & Power
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OEM Hammarlund HQ-170 Receiver Filter Choke 26302
OEM Hammarlund HQ-170 Receiver Filter Choke 26302
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OEM Hammarlund HQ-170 Receiver AF Audio Frequency
OEM Hammarlund HQ-170 Receiver AF Audio Frequency
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OEM Hammarlund HQ-170 Receiver Noise Limiter Switc
OEM Hammarlund HQ-170 Receiver Noise Limiter Switc
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OEM Hammarlund HQ-170 Receiver Tuning Dial Wheel A
OEM Hammarlund HQ-170 Receiver Tuning Dial Wheel A
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Hammarlund HQ-170 Oriignal Manual Only
Hammarlund HQ-170 Oriignal Manual Only
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Hammarlund HQ-170 Communications Receiver Original
Hammarlund HQ-170 Communications Receiver Original
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Vintage Hammarlund HQ 170 One-Seventy Shortwave Ha
Vintage Hammarlund HQ 170 One-Seventy Shortwave Ha
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Hammarlund HQ-170 One Seventy Ham Radio Receiver T
Hammarlund HQ-170 One Seventy Ham Radio Receiver T
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vintage Hammarlund HQ-170  receiver w/ s-200 speak
vintage Hammarlund HQ-170 receiver w/ s-200 speak
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Hammarlund HQ-170 Operator & Service Manual
Hammarlund HQ-170 Operator & Service Manual
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