23/11/2008
Packing again...
Today I have made the brand new Elecraft K3 ready for our next venture, the CQWW-CW contest 2008.
This year we have chosen Madeira (CT3) as our battle filed. Last time I was there was in 2004. The crew is the same as last year's succesfull M/2 operation with some additions (more on that later), one of them being Andy, DJ7IK whom I accompanied to Lybia and Tunesia.
The K3 is the ideal contest rig. It is fittet with a 400 Hz roofing filter and keying and rigcontrol can be done via 1 RS232 cable. That cable was a story in itself. According to my new philosophy, 'you don't have to make what you can buy', I had tried to buy a serial extension cable to do the job. Nowhere in town could I buy one. The girl in the largest computer shop of the Netherlands looked at me with compassion. "Well daddy, you are 5 years ouit of time for this... serial cables have been OUT for several years, they don't exist anymore".
O.K., there are times that you have to admit that you are a bit detached from reality. So I found an internet shop wheich still had a few of those old fashioned cables in stock, and ordered 2 (you never know)... Delivery time 2 working days, so just in time for the trip.
The cables were delivered nicely in time (of course we were away shopping in Belgium when they came, but most delivery crew know that they must put the stuff into the wooden shoe at the back door when we are not at home). The cable connects to the laptop o.k., but I had a problem with the female connector for the K3. The K3 male connector has 2 protruding nuts, the same type of nut the female connector has, so they just don't fit together...
So we had to go back to the old workshop, with screwdrivers, stanley knives and metal saws. When we had cut off the plastic from the connector we saw that that the nut was bolted to the connector. Moreover this was also the connection that held the metal shield of the connector.
The only way out was a visit to the junk box... find an old female connector and fit it to the new cable.
Now I have rigctl working, and also CW. Strangely enough, PTT does not work. I does not return to inactive after the first time it is switched on. This does work ok with the USB cable. Strange.... Fortunately the VOX circuit of the K3 takes this lightly. It has to be ON anyway for the internal keyer to work.
Do I need to mention I also packed the old parallel interface? You never know....
21:37 Posted in contesting | Permalink | Comments (3) | Email this


Comments
Hello Rein,
Very nice to see you back again via this medium.
Enjoy the contest and hope to work you from PI4TUE, where we will be using the K3 of Rens/PA3FGA.
The PTT RS232 issue comes from an error in the user manual. It should be pin 6 instead of pin 7 (or the other way around). Rens just showed me that the other day. He noticed this upon earlier tests with hooking the rig up to N1MM, together with Aurelio @ESRAC.
'73 Mark, PA5MW
Posted by: Mark, PA5MW | 24/11/2008
Tnx Mark, hope you have lots of fun giving the new Stepp-IR a whirl...
Rein PA0R (CS95A, CT9L)
Posted by: Rein PA0R | 24/11/2008
Hello Rein,
the original manual states Pin 6 for the PTT line.
The latest version of the manual on the elecraft webside states pin 7 (what it should be)
The easiest solution for the cabel is to use a piece of network cable: from the 4 pairs bind 1 wire together to the earth terminal and the shield of the connector. Use the other wire of the pair to make the rxd, txd and the control signals.
Due to the strong coupling of the twisted pairs the interference pickup is reduced.
have fun, hear you in contest,
Rens, PA3FGA
Posted by: Rens | 24/11/2008
Post a comment