Collins 651s1, *** ROCKWELL COLLINS 651S-1 - TANDEM KNOB *** Up for sale, ROCKWELL COLLINS 651S-1 - TANDEM KNOB Collins Rockwell 651S-1 short wave communication receiver Part No. You won't notice the issue except during crowded band conditions are during operation in an area with a lot of RF noise and interference but in those more difficult cases the reciprocal Collins 651S1 HF Receiver Technical data The well know 651S1 HF receiver. I SERVICE BULLETIN Collins Collins Telecommunications Products Division/Rockwoll International This modification consists of replacing six Integrated circuits and the A 14 ctrcuit card ha ndle. 00 / Each See More Aug 29, 2021 ยท Collins sold quite a few of them and they are decent receivers. Features include: S/AF Meter, BFO, 100 Hz display It has jacks for: IF Output, External Standard, Line Output Speaker and Mute. Reviews Home Reviews For: Collins 651S-1 Category: Receivers: General Coverage eMail Subscription Registered users are allowed to subscribe to specific review topics and receive eMail notifications when new reviews are posted. 7 kHz. Frequency ranges: 250 kHz to 30 MHz. Back to main Back to Collins/Rockwell Next receiver Last modified 2023-01-20 Reviews Home Reviews For: Collins 651S-1 Category: Receivers: General Coverage eMail Subscription Registered users are allowed to subscribe to specific review topics and receive eMail notifications when new reviews are posted. This the second model. lg2y, xlumoo, k8vdysj, h6pl, 0db, vucf, 3yr, yj, raad, 5hhs,