[Elecraft] Remote operation of the K3 questions

Josh Fiden josh at voodoolab.com
Sat Mar 9 12:27:56 EST 2013


Hi Dick,

200 ft is not a long distance at HF. If you're already going to run a 
cable from the operating position to near the antenna anyway, why not 
just use a low loss feedline? LMR400 or equiv is only around -1.5dB at 
10m. If that's unacceptable, you can find 1/2" hardline for much less 
than your proposed solutions.

73,
Josh W6XU

On 3/9/2013 8:54 AM, Dick Diddams wrote:
>   
>
> Twice I've written to K3 Support with no response - hence my assumption, 'my
> application can't be done'.  Also, my questions are most likely "outside"
> the charter of K3 Support and no response was provided.
>
>   
>
> Reply directly to me, please doesn't clutter the Elecraft Digest with
> needless chatter. (dickdiddams at earthlink.net)
>
>   
>
> The questions asked K3 Support:
>
> "Please recommend articles (manufacturers of hardware performing this
> application) connecting the K3, KPA500, P3 and KAT500 via cable over a
> distance of 200- to 250-ft?  My operation is 95% CW, 4% PSK and 1% SSB."
>
>   
>
>   
>
> "Recommend Application Note(s) available for operating a remote station
> operation via cable"
>
>   
>
>   
>
> "Usage of a UHF (1296 MHz as example) link is acceptable - but request
> direction where to locate articles."
>
>   
>
>   
>
> "Which is better hardware to use for this application, the K3/0, or a 2nd
> regular K3 operating in 'terminal mode'?"
>
>   
>
>   
>
> The reason for operating remote, is because the antenna will be located
> about 200-ft from the house.  The remote station is in an insulated climate
> controlled room (inside a barn).  The remote operating location has 100-amp
> 240-volt service.
>
>   
>
> As a side note, (from your experience), is it simpler for one to use the
> Internet for this application - - - concern when using the Internet is able
> to have full CW break-in.  My normal operating speed is about 30 WPM and up
> to 40 WPM.  Not sure if there is a limitation on CW speed when operating
> remote.  If there is a limitation, what is the maximum CW speed one can use
> when operating remote?
>
>   
>
> My preference is to run a cable (or an UHF link) and not use the Internet
> for the remote operation.
>
>   
>
> If the recommendation is a K3/0 as the preferred hardware to use for remote
> operation, are there "used" Remote Internet System readily available and
> what is a reasonable selling price? 70%, 60%, etc. of the original selling
> price?
>
>   
>
> When you reply directly to me, and if we haven't had previous
> communications, your email will automatically be placed in a Junk Folder
> until it is retrieved and your address has been added to my Address Book.
> Approximately once each day, the "Junk Folder" will be viewed and your
> address will be added to the Address Book.
>
>   
>
> Regards, Dick - W7QHE
>
> dickdiddams at earthlink.net
>
>   
>
> PS - Searching the Internet did not provide answers to my above questions -
> possibly, the questions were not phrased properly!
>
>   
>
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