It was in this system that the 651S-1 was first placed in the Air Force inventory after passing severe environmental evaluations per MIL-STD-810B and MIL-S-52059B without experiencing a failure, while installed in the shelters.Ī large number of 651S-1’s have also been procured by US Government organizations for numerous applications ranging from single-receiver installations to elaborate processor-controlled systems. One application is the Tactical Weather System “C”, Module AN/TCC-77, which uses three 651S-1 Receivers per module.
In addition, the Coast Guard is also using the 651S-1, with much success, in severe environment aboard patrol boats.Īnother example is the US Air Force which has placed the 651S-1 in inventory under FSN 582. A typical example is the US Coast Guard, which has selected the 651S-1 as their standard general communications receiver. It can also be provided with a continuous 10-Hz tuning capability by combining the tuning functions of the digital VBFO and main receiver tuning.Įxtensive domestic and international evaluations of various configurations have convinced many of our customers to classify this receiver family as standard. The latest in the 651S-1 Receiver family is the 651S-1B configuration which incorporates a highly stable plug-in digital VBFO function, plug-in RS-232C/MIL-STD-188C computer interface, and a completely modular plug-in power supply. This flexible characteristic gives the 651S-1 the capability of being molded to meet specific customer requirements with minimum effort, minimum design changes, and minimum cost to the customer. Optional functions, such as ISB, vlf, special if filter bandwidths, and various remote control interfaces were designed to be added by the simple insertion or substitution of plug-in modules. and flexibility of configuration for various functional applications.
It was designed using modular, solid-state construction for ruggedness, reliability, maintainability, cost effectiveness.
The 651S-1 Receiver series was developed and produced by Collins in late 1970 to meet the need for a remotely or locally controlled state-of-the-art general purpose hf receiver capable of reproducibility in high volume and at an economical cost. Handsomely styled, this unit is as suited for an executive’s office as it is for a remote, unattended communications site. The 651S-1 Receiver has potential uses not possible for any receiver previously developed in the long line of Collins products. In the process, Collins has developed the expertise apparent in the current 651S-1 Receiver family. From the 51H Receiver series in the mid-1940’s, through the 51J series, R-390, and 51S-1 Receivers, Collins has designed and developed hf receivers that have attained universal acceptance. Collins general purpose hf receiver products have set the pace for the industry throughout the years with the latest designs and highest performance.
Collins Radio Group’s experience in the communications field, and more specifically in hf communication, dates as far back as 1933.