Re: [Repeater-Builder] Heat sink anyone?
That's where I got mine. - Original Message - From: Lee Williams Sent: Sunday, December 14, 2003 1:53 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Heat sink anyone? The little metal standoffs can be robbed from the mobile donor heatsink,they knock out nicely from the bottom with a drift. I have hand redrilled the heatsinks,its a thankless,tedious job. 73,Lee - Original Message - From: Fred Flowers To: Repeater-Builder@yahoogroups.com Sent: Sunday, December 14, 2003 2:09 PM Subject: Re: [Repeater-Builder] Heat sink anyone? The only two that interchange I know of are the late 110 w VHF & 75/100 w UHF. The early 110 w vhf that uses 4 transistors in the final and the low band may interchange. I have both and I'll look. Not only do you have to drill & tap all the holes. You have to rob the little metal stand offs from someplace, to hold down the circuit board. I've done it on a drill press but a Bridgeport would be easer & more precise. Fred KF4QZN - Original Message - From: Virden Clark Beckman Sent: Sunday, December 14, 2003 12:56 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Heat sink anyone? Actually it doesn't, most of the heat sinks are band specific unless youwant to drill and tap about 20 some 6-32 and 14 4-40 holes in thealuminum to hold components down - I did it and it is a very tediousproject.-- 73...Clark Beckman N8PZD Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Heat sink anyone?
The little metal standoffs can be robbed from the mobile donor heatsink,they knock out nicely from the bottom with a drift. I have hand redrilled the heatsinks,its a thankless,tedious job. 73,Lee - Original Message - From: Fred Flowers To: Repeater-Builder@yahoogroups.com Sent: Sunday, December 14, 2003 2:09 PM Subject: Re: [Repeater-Builder] Heat sink anyone? The only two that interchange I know of are the late 110 w VHF & 75/100 w UHF. The early 110 w vhf that uses 4 transistors in the final and the low band may interchange. I have both and I'll look. Not only do you have to drill & tap all the holes. You have to rob the little metal stand offs from someplace, to hold down the circuit board. I've done it on a drill press but a Bridgeport would be easer & more precise. Fred KF4QZN - Original Message - From: Virden Clark Beckman Sent: Sunday, December 14, 2003 12:56 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Heat sink anyone? Actually it doesn't, most of the heat sinks are band specific unless youwant to drill and tap about 20 some 6-32 and 14 4-40 holes in thealuminum to hold components down - I did it and it is a very tediousproject.-- 73...Clark Beckman N8PZD Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [Repeater-Builder] Heat sink anyone?
The only two that interchange I know of are the late 110 w VHF & 75/100 w UHF. The early 110 w vhf that uses 4 transistors in the final and the low band may interchange. I have both and I'll look. Not only do you have to drill & tap all the holes. You have to rob the little metal stand offs from someplace, to hold down the circuit board. I've done it on a drill press but a Bridgeport would be easer & more precise. Fred KF4QZN - Original Message - From: Virden Clark Beckman Sent: Sunday, December 14, 2003 12:56 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Heat sink anyone? Actually it doesn't, most of the heat sinks are band specific unless youwant to drill and tap about 20 some 6-32 and 14 4-40 holes in thealuminum to hold components down - I did it and it is a very tediousproject.-- 73...Clark Beckman N8PZDYour use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
