The ground pins are very short. Honesty is the best policy. New old stock Collins Mechanical Filter. Insertion loss 3. Bandwith Hz Results Pagination - Page 1 1 2 3 4 5 6. Shop by Category. Brand see all. Not Specified.
Collins Mechanical Filter F500Z-4
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Buy It Now. Classified Ads. Item Location see all. Its non-executive chairman is Anthony Carbone following the retirement of Clayton M. In the mids, the Collins Radio Company constructed and sold transmitters and audio mixing consoles to the broadcast industry. During World War II , Collins expertise grew in higher power transmitters producing designs which ran well over 15 kilowatts of RF power on a continuous basis. After the war a limited number of AM transmitters were produced called the G and remain the finest in low power AM transmitters W ever produced.
Collins remained an important manufacturer of AM and FM broadcast radio transmitters for the commercial market surviving the drastic cost cutting market of the s and s. Collins produced several shortwave transmitters to the commercial market. A "30" Series production catered to the growing need of state highway patrol agencies and Department of Commerce aviation needs.
During World War II, Collins produced high power transmitters for aircraft, notably the ART equipped with automatic tuning circuits, which represented an important enhancement for airborne radio communications. Around , the company introduced their first amateur radio receiver, the 75A-1 called the 75A. This set achieved excellent stability for the time due to high build quality and the use of a permeability tuned oscillator PTO in its second conversion stage.
It was one of the few double conversion superheterodynes on the market and covered only the amateur bands. With the experience gained in the design of the 75A-1, Collins released the 51J-1 receiver, a general coverage HF set covering. It would be produced in somewhat updated versions 51J-2, 51J-3, 51J-4 for about a decade. The 75A amateur line was updated throughout the early 50s, finishing with the 75A-4 , which was released in The Collins mechanical filter was introduced to consumers in the 75A-3, and the 75A-4 was one of the first receivers marketed specifically as a single sideband receiver.
Around , Collins began designing the R This was intended to be a receiver of the highest performance available, with the ruggedness and serviceability required for military duty. It featured direct mechanical digital frequency readout. The set is composed of several modules for easy field repair—a bad module could simply be swapped out and repaired later, or junked.
Concurrently, Collins developed the R, a long-wave version with fewer than made. The R, another variant of the R, allowed choice of 8 different auto-tuned channels. Three years later, Collins delivered the RA  to the military. About 54, were produced and the set was a military workhorse until the s. Like the R, it can outperform many modern radios, to the point that it was designated top secret until the late s. These featured mechanical filters, very accurate frequency readout, and excellent stability. At the request of the US government, Collins designed the 51S-1 general coverage set, which was essentially in intended use a physically smaller replacement for the 51J series.
It was not intended as a replacement for the higher performance RA, and unlike the RA, it was extensively marketed for commercial use. Collins produced a few high performance solid state receivers in the s, such as the S Like their tube predecessors, these are coveted by collectors today. They were the first equipment maker to take this approach.
Together, these two innovations put Collins temporarily ahead of its competition and set the stage for other manufacturers and the next generation of amateur and military HF radio equipment. Other accessories included speakers, microphones and control consoles. The -3A and -3C units were identical to the -3 and -3B units, respectively, except they provided an extra set of heterodyne oscillator crystals enabling them to cover extra bands — useful for military, amateur and MARS operation, where operation just outside the regular amateur bands was necessary.
The KWM transceiver was introduced the next year — a break with the past both in its use of transistors and digital technology, and its styling.
- Rockwell Collins to End Mechanical Filter Production.
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In the s, the company designed and sold C-System computerized message switching equipment, built an intranet, and began implementing computer storage of design data for circuit boards and assemblies. They had a goal of automating all functions from parts ordering and inventory to factory scheduling to generation of maintenance provisioning.
With products technically successful and far ahead of their time in many respects, Mr. Collins continued to invest in development at a rate that could not be supported by sales when a downturn occurred, and began to have financial problems. As a result of the acquisition, a newly created direct or indirect subsidiary of Rockwell, Quarterback Merger Sub Corp.
Rockwell Collins to End Mechanical Filter Production
The CS division services the commercial airline industry and business aircraft, providing navigation, communication, Synthetic vision , other cockpit products such as autoland autopilots , and cabin products such as In Flight Entertainment IFE. The GS division services primarily the US government and military, but also provides some products and services to foreign governments with close ties to the United States. The Donald R.
Beall Advanced Technology Center ATC is a research and development center within Rockwell Collins that focuses on creating, identifying, and maturing technologies targeted at driving business growth. ATC maintains a portfolio that balances shorter term deliverables focused on core and adjacent markets with technologies for long term growth.
As with several other brands of vintage radio equipment, there is an active community of Collins radio enthusiasts, with clubs, web sites and on-line discussions dedicated to restoring and operating the equipment. Images, videos and audio are available under their respective licenses. Home FAQ Contact. Rockwell Collins Wikipedia open wikipedia design.
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