Re: [Elecraft] K3 External Frequency Reference Questions

2014-09-20 Thread David G4DMP
In a recent message, Sverre Holm (LA3ZA) la...@nrrl.no writes I wonder what's the experience with the MV89A, does it need a lot of adjustment of the control voltage, or does it have this kind of accuracy out of the box? No, Sverre, I did not need an adjustable 5V control voltage as the MV89A was

Re: [Elecraft] K3 External Frequency Reference Questions

2014-09-20 Thread Sverre Holm (LA3ZA)
Thanks David, David G4DMP wrote No, Sverre, I did not need an adjustable 5V control voltage as the MV89A was spot on 10,000,000.00 Hz - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications:

Re: [Elecraft] K3 External Frequency Reference Questions

2014-09-19 Thread David G4DMP
In a recent message, David and Dianne on Comcast dhh...@comcast.net writes I'm interested in possibly trying the K3EXREF in my good ol' K3 for no good reason other than its something new and fun to try and can give some bragging rights about frequency accuracy. Can any of you comment on your

Re: [Elecraft] K3 External Frequency Reference Questions

2014-09-19 Thread Ian White
A rubidium frequency source contains a few milligrams of natural rubidium, some of which is weakly radioactive. But there is about 5 times more radioactivity in a banana and about 1000 times more natural radioactivity in the human body itself (in both cases, mostly due to natural potassium-40).

Re: [Elecraft] K3 External Frequency Reference Questions

2014-09-19 Thread David Cole
The human body? -- Thanks and 73's, For equipment, and software setups and reviews see: www.nk7z.net for MixW support see; http://groups.yahoo.com/neo/groups/mixw/info for Dopplergram information see: http://groups.yahoo.com/neo/groups/dopplergram/info for MM-SSTV see:

Re: [Elecraft] K3 External Frequency Reference Questions

2014-09-19 Thread Sverre Holm (LA3ZA)
I wonder what's the experience with the MV89A, does it need a lot of adjustment of the control voltage, or does it have this kind of accuracy out of the box? David G4DMP wrote but recently got a 10MHz MV89 double oven CXO which is inexpensive and excellent. Mine is accurate to the nearest

Re: [Elecraft] K3 External Frequency Reference Questions

2014-09-19 Thread David Cole
I too would like an overview of your setup as well... -- Thanks and 73's, For equipment, and software setups and reviews see: www.nk7z.net for MixW support see; http://groups.yahoo.com/neo/groups/mixw/info for Dopplergram information see: http://groups.yahoo.com/neo/groups/dopplergram/info for

[Elecraft] K3 External Frequency Reference Questions

2014-09-18 Thread David and Dianne on Comcast
Hi All, I'm interested in possibly trying the K3EXREF in my good ol' K3 for no good reason other than its something new and fun to try and can give some bragging rights about frequency accuracy. Can any of you comment on your experiences in using the K3EXREF? Elecraft provides very little

Re: [Elecraft] K3 External Frequency Reference Questions

2014-09-18 Thread Roger de Valle
they are marginal. If you decide to build one I am sure there are lot of folks who have done just that and can assist you, I would be happy to share my construction experiences off list with you. Regards. Roger VK3ADE. -Original Message- Subject: [Elecraft] K3 External Frequency Reference

Re: [Elecraft] K3 External Frequency Reference Questions

2014-09-18 Thread Bayard Coolidge, N1HO via Elecraft
I installed a K3EXREF and set up a Trimble Thunderbolt a few months ago, and I've been very happy. The K3EXREF was very easy to install - just remember that it's a very good idea to use a static mat and wrist strap whenever you dive into the inside of a K3. The instructions were quite clear, and

Re: [Elecraft] K3 External Frequency Reference Questions

2014-09-18 Thread Matt Zilmer
My experience was similar, using a Thunderbolt. I won't duplicate Bayard's narrative, except to emphaisze using ESD precautions when working inside any transceiver. 73, matt W6NIA On Thu, 18 Sep 2014 17:32:04 -0700, you wrote: I installed a K3EXREF and set up a Trimble Thunderbolt a few months