Lance, Thanks , that was a very good Expiation . We have many times on 6M ssb and 2M eme, However we have not worked 6M EME , after I rework my 6M antenna ill look for you on 6M eme . 73 CUL Ken K5DNL ---------------------------------------------
--- On Wed, 1/14/09, Lance Collister <[email protected]> wrote: > From: Lance Collister <[email protected]> > Subject: Re: [Elecraft] K3_JT65_Digi mode > To: [email protected] > Cc: [email protected] > Date: Wednesday, January 14, 2009, 10:18 AM > Ken Roberson wrote: > > Hello All, > > > > The K3 has been working flawless on digi modes. > > About 2 years ago we started using JT65 on HF, > > It the same that we use for EME weak signal > moon-bounce . > > With low power and a dipole we are able to work > > EU almost every day. > > Before I built the K3 I was using a homebrew 4 watt > rig . > > JT65a is part of the WSJT software package, It's > free software. > > The call freq on 20 Meters is 14076, we operate + or - > abt 600 hz from 14076. > > Check it out , In the day time u can hear the tones of > JT65A on 14076. > > In the morning EU is coming in and in the afternoon - > evening JA and VK Land . > > http://physics.princeton.edu/pulsar/K1JT/index.htm > > 73 all good dx Ken K5DNL > > > > > > > > _______________________________________________ > > Elecraft mailing list > > Post to: [email protected] > > You must be a subscriber to post to the list. > > Subscriber Info (Addr. Change, sub, unsub etc.): > > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > > Elecraft web page: http://www.elecraft.com > > > > > Good point, Ken! > > Since most of the folks here are K3 users (with built-in > digital mode capability on 6m) I will add this to Ken's > comments... I have worked stations as small as 100w using 5 > element yagis on 6m EME using the very sensitive JT65A mode. > There was no signal audible from such small stations, but > the message sequences were successfully decoded and the > signal trace is very easily observed on the SpecJT waterfall > screen while JT65A mode is running. > > And I'll bet you had heard the 6m band was dead! The > secret to working 6m EME with JT65A is: > > 1) Set up a schedule with a large 6m station and run the > schedule for the hour that the moon is closest to the > horizon at your QTH, so it will pass through the ground gain > antenna lobes that provide the extra gain when your antenna > is aimed at the horizon. > > 2) Choose a good time of month when conditions for 6m EME > are optimum (there are good and bad days every month, > depending on where the moon is in its orbit around the > earth). > > 3) Transmit and monitor EVERY minute of the schedule. > Signal peaks on 6m EME can be very short, and everything > must be exactly right for you to decode the very weak EME > signals. For example, two of the factors are that the > polarity of the signals continually rotates, and the setting > (or rising) moon must happen to be passing through one of > your antenna's narrow but high gain ground gain lobes. > > 4) On top of everything else, it is very rare for both > stations to copy each other at the same time (due to the > polarity changes), so the standard EME exchanges and > protocol need to be followed. These messages are > automatically generated by the user in JT65A mode, and the > procedure is explained there (press F5 when running JT65A > mode). > > If anyone is interested in learning more about JT65A mode > or 6m EME, more information is available on my website: > > http://www.bigskyspaces.com/w7gj/Welcome_to_6m_EME.htm > http://www.bigskyspaces.com/w7gj/JT65.txt > > Gud luck and DX to all! VY 73, Lance > > -- Lance Collister, W7GJ (ex: WN3GPL, WA3GPL, WA1JXN, > WA1JXN/C6A, ZF2OC/ZF8) > P.O. Box 73 > Frenchtown, MT 59834 USA > QTH: DN27UB > TEL: (406) 626-5728 URL: http://www.bigskyspaces.com/w7gj > 2m DXCC #11, 6m DXCC #815 _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
