[50mhz] 6M8GJ antenna going to E51SIX Sunday
Lance Collister
w7gj at q.com
Wed Mar 18 22:57:58 EDT 2009
Howdy!
Just a reminder that things are falling into place for the EME DXpedition in rainy
Rarotonga, and we are starting to pack up to head out this weekend. I am still
hoping to be QRV by my moonrise on March 26, weather permitting. Mike K6MYC has
very graciously loaned me his water cooled solid state amp, and it seems to be
working FB as of late this afternoon :-)
I hope to be able to provide some updates from time to time at a local internet
cafe. Please watch for updates on these web pages:
http://www.bigskyspaces.com/w7gj/E51SIX.htm
http://www.mmmonvhf.de/latest.php
http://www.on4kst.info/chat/login.php?band=1
Mike also has graciously loaned me his new 8 element yagi, especially designed for
portable 6m operation. It is everything I have been dreaming about for a 6M
DXpedition antenna ;-) However, its 12.17 dBD free space gain is something that
is probably of interest to people even if they are not needing a magic 6m antenna
to take in a travel bag on an airplane. I probably can't attach a document via
email, so I have put the brand new M2 specification sheet for the antenna up on my
webpage:
http://www.bigskyspaces.com/w7gj/6M8GJMAN1_BW.pdf
Below, I am forwarding the introduction that Mike just sent out regarding the
above data sheet. I hope many of you will listen on JT65A for me during your
moonsets between March 26 and April 4! Let's take advantage of these great times
for EME! I am looking forward to providing a new DXCC for many 6m stations :-)
Please spread the word - MNI TNX!
GL and VY 73, Lance
********************************************************************************
Subject: 6M8GJ Spec Sheet
I KNOW SOME OF YOU ALREADY HAVE GOOD 6M YAGIS BUT I AM SENDING THIS ALONG FOR TWO
REASONS
LANCE ,W7GJ, WILL BE USING THIS ANTENNA FROM E51 (OLD ZK1) STARTING MARCH 26 OR 27
FOR 6M EME ON 50.190. HE ALSO HAS MY SOLID STATE WATER COOLED KW AMP AND WE HOPE
ALL GOES WELL WITH HIS EME OPERATION.
LANCE JUST CALLED ME AND SAID HE HAS A COOL 800W OUT OF THE AMP WITH JUST 16W
DRIVE SO HE IS READY TO PACK IT UP.
HE WILL HAVE COMMON MOONTIME WITH EUROPE FOR ABOUT 1 HOUR ON HIS MOON RISES. HE
HAS ALSO BUILT ELEVATION CAPABILITY INTO THE SINGLE YAGI SO WE WILL ALL SEE HOW
MANY OF US HE CAN WORK WITH THE YAGI AND NO GROUND / WATER GAIN.
THE OTHER REASON I AM SENDING IT ALONG IS TO PROMOTE SALES OF THIS ANTENNA AND ALL
OF YOU ARE IN A POSITION TO AT LEAST PASS THIS INFORMATION ALONG TO OTHER
POTENTIAL USER / BUYERS.
I AM PERSONALLY VERY EXCITED ABOUT THIS ANTENNA AND I FEEL THAT SEVERAL WILL SHOW
UP IN 4 BAY ARRAYS BEFORE TOO LONG. I WILL PUT UP AT LEAST FOUR AT MY HOME QTH
AND I THINK I CAN MUSTER AN 8 BAY ARRAY.
LOOKING AT THE CYCLE 24 SUNSPOT ACTIVITY, IT IS QUESTIONABLE IF WE WILL GET ENOUGH
F2 TO WORK MORE THAN JUST ROUTINE DX. WITH A 4 BAY YOU CAN GO RIGHT ON COLLECTING
COUNTRIES NO MATTER WHAT MR. SOL DECIDES TO DO.
THERE IS ONE MINOR CORRECTION TO THE "FEATURES" PART OF THE SPEC SHEET. SINCE THE
FINAL "CARRY BAG" WE WILL BE OFFERING AS AN OPTION IS SLIGHTLY LONGER THAN THE
ORIGINAL BOGEN CAMERAL STAND BAG I HAVE BEEN USING FOR YEARS, WE CAN LENGTHEN THE
MAST SECTIONS BY A COUPLE INCHES EACH AND MAKE THE MAST TALL ENOUGH TO PUT THE
ANTENNA AT EXACTLY 20 FEET AS SHOWN IN THE SOLID WORKS DRAWING ABOVE.
THE DRAWING BY THE WAY IS EXACTLY TO SCALE IN EVERY WAY RIGHT DOWN TO THE NUT AND
BOLT LENGTHS USED. IT ALSO FEATURES AND SHOWS EXACTLY WHAT OUR NEW 3KW 1:1 BALUN
LOOKS LIKE AND THE CLEAN HAIRPIN MATCHING SYSTEM USED ON THE ANTENNA. THE BALUN IS
CAREFULLY FABRICATED FROM A 10 INCH SECTION OF LMR400 FLEX TERMINATED IN A FEMALE
'N' TYPE CONNECTOR. EACH BALUN IS ELECTRICALLY IDENTICAL SO PHASING OF MULTIPLE
ANTENNAS IS SIMPLE AND STRAIGHTFORWARD.
THANKS FOR READING!
73, MIKE, K6MYC
**********************************************************************************
--
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
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