Re: [Elecraft] DX Doubler/K3 issue

2010-03-31 Thread Tom W8JI
There are two common causes of this problem. One is the potential difference between the two radios. Bonding and using the same outlet will fix that. The second common cause is a magnetic field that couples into the loop between the two radios and the DXDoubler. That field is most

Re: [Elecraft] DX Doubler/K3 issue

2010-03-31 Thread David Cutter
Tom You mention bonding in vehicles and this rang a large bell with me: all military vehicles, land sea and air, require a separate dc return other than the chassis for the battery negative terminal. Filter caps for emc are returned to the chassis of the equipment which is strongly bonded to

Re: [Elecraft] DX Doubler/K3 issue

2010-03-31 Thread Joe Subich, W4TV
:09 AM To: Jim Brown; elecraft@mailman.qth.net Subject: Re: [Elecraft] DX Doubler/K3 issue There are two common causes of this problem. One is the potential difference between the two radios. Bonding and using the same outlet will fix that. The second common cause is a magnetic field

Re: [Elecraft] DX Doubler/K3 issue

2010-03-30 Thread Jim Brown
On Mon, 15 Mar 2010 19:44:31 -0400, Joe Subich, W4TV wrote: This is a common problem with DXDoubler due to differences in chassis potential between transceivers. TopTen Systems have even published an application note concerning the issue: http://www.qth.com/topten/apnote9.htm Their

[Elecraft] DX Doubler/K3 issue

2010-03-15 Thread k6rb
Just completed my second K3/100 and am in the process of integrating them into the former FT-1000 SO2R station. I'm using the DX Doubler for SO2R switching. I bought the K3 cables from them, and hooked up both radios to DXD. When I plug the headset into the DXD phone socket, I hear a hummy

Re: [Elecraft] DX Doubler/K3 issue

2010-03-15 Thread Joe Subich, W4TV
Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of k...@baymoon.com Sent: Monday, March 15, 2010 4:41 PM To: elecraft@mailman.qth.net Subject: [Elecraft] DX Doubler/K3 issue Just completed my second K3/100 and am in the process

Re: [Elecraft] DX Doubler/K3 issue

2010-03-15 Thread Joe Planisky
Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of k...@baymoon.com Sent: Monday, March 15, 2010 4:41 PM To: elecraft@mailman.qth.net Subject: [Elecraft] DX Doubler/K3 issue ... When I plug the headset into the DXD phone socket, I hear

Re: [Elecraft] DX Doubler/K3 issue

2010-03-15 Thread Joe Subich, W4TV
: [Elecraft] DX Doubler/K3 issue Would bonding the two chassis together with thick wire or braid work? 73 -- Joe KB8AP On Mar 15, 2010, at 4:44 PM, Joe Subich, W4TV wrote: This is a common problem with DXDoubler due to differences in chassis potential between transceivers