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W7GJ

9/19/2015

4 Comments

 

Episode 059 - Lance Collister - W7GJ

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Lance Collister, W7GJ, has had a fascination with VHF,  six and two meters,  for over fifty years, when he had a Heathkit Twoer and a three element yagi. Now Lance travels to the far corners of the Earth with his Elecraft KX3 to bounce his six meter signal off of the moon. Lance tells us how he does it in his conversation with Eric, 4Z1UG, on QSO Today.

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First Interest: 1965, Age 13, electronics buddies at a Landisville PA Jr. high school. 

First License: 1966, Age 14, WN3GPL

First Elmer:  Frank Altdoerffer,  W3APO

First Rig: 
  • Lafayette general coverage receiver
  • Borrowed Collins 51J4 Receiver
  • Lysco Novice Transmitter

First Contact as General: Heakit Twoer with 3 element. Picture Here

First Job out of college:  design engineer at 
General Electric

Has a patent on a log joining system for building log homes. 

EME Facts: 
Earth-Moon-Earth Communications - 7% of signal is reflected back from the moon

Meteor Scatter - Meteors that enter the Earth's atmosphere burn up leaving an ionized trail of gas in the E layer.  These trails reflect signals in the 30 MHz and higher.  The bursts last longer the lower the frequency. 

QSO Today found an interesting article in the research on Meteor Scatter: APRS Meteor Scatter Email System - Interesting project to notify of meteor scatter. 

Meteor Scatter schedules

TEP Zone - called Trans-Equatorial Propagation Zone, over the equator that allows long distance contacts on VHF and sometimes UHF. 

W7GJ EME Station:
  • Elecraft K3 Transceiver with 2 meter module. “The perfect rig for DXing on 6 and 2 meters”
  • Solid state driver amp
  • 8877 Tube Amplifier 1500 Watts on 2 meters
  • 3CX3000 Tube Amplifer on 6 meters
  • 4 Nine element yagi
  • 16 X 33 Foot 2 meter Yagis
  • JT65 Digital Mode - 10db better performance
  • H-Frame antenna structure

Getting Started on EME:  
  • Start with W7GJ's website
  • 6 meters you should live in the TEP Zone to use 100 watts and a vertical
  • Good and long 6 meter Yagi from the east coast and 500 watts
  • 4 Yagi System for 2 meters
  • Feedline loss - put preamp out at the antenna on 2 meters
  • Run 1 ⅝” Heliax on two meters 
  • Keep the line loss below 1db on the frequency to keep the receiver preamp in the shack
  • Elevating the antenna will eliminate the ground gain when doing EME

Peter Island DXpedition, 3Y0X.  - to Antarctica. EME did not work at all; signal absorbed in the ice? 

W7GJ - Six Meter EME DXpedition Kit
  • Elecraft KX3
  • M2 6M1K2  Kilowatt modified to 3 watts drive
  • M2 6M8GJ yagi.   8 elements on a 43' boom
  • 75 feet LMR600 
  • 6 Meter W8GJ Yagi 
  • mast, guy anchors, 


Setting up EME on Clipperton Island

Associations that support EME or Moon Bounce:
  • American Radio Relay League
  • UK SMG  six meter group
  • UHF monthly news letter. 
  • ON4KST chat page 
  • N0uKjt65 chat page

EME Resources: 
  • YU7EF Antennas
  • https://www.qrz.com/lookup
  • http://www.t-rexsoftware.com/peterone/pilots.htm
  • http://www.bigskyspaces.com/w7gj/
  • http://www.g8bcg.org.uk/W7GJ.htm
  • http://elecraft.365791.n2.nabble.com/K3-Digital-modes-td7579282.html#a7579283
  • https://www.youtube.com/watch?v=lUSUFjeC4vo
  • http://www.aaaaa.se/sm7fje/index.php/tx5k

The RSS Feed for all audio content from QSO today is available from here. 

Please join our QSO Today community by pressing the button below. It is the best way to suggest guests and topics, and provide feedback to Eric, 4Z1UG.
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Collins 51J4 Receiver
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Heathkit Twoer or "Benton Harbor Lunchbox"
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W7GJ Antenna Farm
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5W0GJ working K7CW on EME
4 Comments
Howard Sherer. AE3T
9/20/2015 07:58:33 am

Lance, thanks for a great interview, and all you have done for amateur radio.

Reply
Eric 4Z1UG
10/28/2015 01:34:59 am

Lance just received the Fred Fish Memorial Award #7 for working and confirming all 488 maidenhead grid squares on 6 meters in the 48 contiguous States.

Reply
Dan link
1/22/2017 05:14:30 pm

Eric,

Please let me know if anyone knows about transmitting via ionization chambers to the antenna or specific alternate medium?

I have been having great success with 40 meter SSB into the Ionizer .
The Ionizer is in the Triode configuration inside the chamber.

I just would like some feedback.

Dan telephone 623 792 5607 email wd8pcu@cox.net

Reply
Eric 4Z1UG
1/29/2017 01:56:14 am

Dan -

I can't say that I have ever heard of inserting an ionization chamber between a transmitter and antenna. Perhaps you should ask your question on Facebook, eHam, or QRZ where there is a lager audience.

73, Eric

Reply



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