Ray -
Is it possible that the toroids are wound the "wrong" direction? Check
the assembly illustrations carefully. It makes a difference whether the
winding starts in a "clockwise" or "counter-clockwise" manner as to
whether or not the leads line up with the solder holes in the PC board.
Use of adhesives to secure coils is usually not recommended - although I
cannot see how it could hurt, performance wise. Securing the toroids to
the board could make future servicing difficult. There have been few or
no reports of toroids coming loose or having wires break, even in mobile
service.
- Jim, KL7CC
On 12/9/2012 1:31 PM, Ray Collins wrote:
I am constructing the KPA 100 and have just fitted L16 and RFC1 (both blue
cores wound with 37 turns of 26 gauge wire). I am having difficulty getting
the two toroids to sit securely on the PCB because the leads do not align with
the holes in the PCB so preventing the toroids from being pulled tight against
the board. The toroids seem quite wobbly and I am concerned that with shock
and vibration, the wires will break. Any suggestions? How about a very small
amount of epoxy adhesive between toroids and PCB taking care to avoid the
windings?
Many thanks,
Ray
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
