K3: Rev B FP Modification for curing Hang VOX problems

classic Classic list List threaded Threaded
2 messages Options
Reply | Threaded
Open this post in threaded view
|

K3: Rev B FP Modification for curing Hang VOX problems

dhhdeh
Hi Everyone,

I am about to perform some overdue mods on my K3 #371.

I notice that this mod (Rev B FP Modification for curing Hang VOX
problems) is required for K3 #'s 660 to 782 but not on those before or
after this range.

As I will have the FP off and the DSP board removed should I do it
anyway?  It involves installing a jumper between C98 and a pad on the AF
Gain/Sub control.

I guess I'm confused as to why it does not apply to earlier K3's

Help and opinion will be appreciated.

73 de N1LQ-Dave
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Reply | Threaded
Open this post in threaded view
|

Re: K3: Rev B FP Modification for curing Hang VOX problems

KK7P
> I guess I'm confused as to why it does not apply to earlier K3's

The earlier K3s had a capacitor hand-soldered to the FP board.  Later,
the capacitor was added to the FP PCB layout, but an error in that
layout required the jumper to correct.

73,

Lyle KK7P

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html