Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*Topband\:\s+YCCC\s+9\s+Circle\s+preamp\s+failure\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*Topband\:\s+YCCC\s+9\s+Circle\s+preamp\s+failure\s*$/: 4 ]

Total 4 documents matching your query.

1. Topband: YCCC 9 Circle preamp failure (score: 1): Author: VE6WZ_Steve <ve6wz@shaw.ca>; Date: Fri, 13 Sep 2019 12:55:20 -0600; After 2.5 years of flawless operation, earlier this summer my YCCC 9 circle rx array started to develop some strange inter-mod noise, and random junk showed up on 160m when using the array. I isolate; /archives//html/Topband/2019-09/msg00065.html (8,108 bytes)
2. Re: Topband: YCCC 9 Circle preamp failure (score: 1): Author: "Paul Christensen" <w9ac@arrl.net>; Date: Fri, 13 Sep 2019 15:41:35 -0400; Steve, I recently ran into an identical problem with an Alpha 89 amplifier. A pair of 0.01 uF/100V caps had failed on the plate choke clapper arm relay. The caps are used on the relay coil as an RF b; /archives//html/Topband/2019-09/msg00066.html (9,018 bytes)
3. Re: Topband: YCCC 9 Circle preamp failure (score: 1): Author: lloydberg@charter.net; Date: Fri, 13 Sep 2019 16:03:41 -0500; I'm running the YCCC RX array. I had to add 100K carbon resistors between the input terminal and ground as a static drain or the input caps would puncture and burn out the Integrated Circuit. 73 Lloy; /archives//html/Topband/2019-09/msg00068.html (8,829 bytes)
4. Re: Topband: YCCC 9 Circle preamp failure (score: 1): Author: VE6WZ Steve <ve6wz@shaw.ca>; Date: Fri, 13 Sep 2019 15:37:19 -0600 (MDT); Paul is absolutely correct. The op-amp is a configured as non-inverting. I incorrectly assumed it was wired to invert simply because all of the pre-amps show the same 180 phase shift. Steve From Babc; /archives//html/Topband/2019-09/msg00070.html (10,522 bytes)

Current List: 1 - 4
Page: [1]