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Author Topic: 6:1 Balun on Globe King output ??  (Read 5072 times)
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nq5t
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« on: May 15, 2005, 01:22:35 PM »
Somewhere, and I think it was here, there was a posting some time ago about the use of a 6:1 balun (6:1-HB/U300) on the output of a Globe King.  The idea was to connect the 300 ohm side to the existing antenna output to provide a "friendlier" match for 50 ohm antennas to the the King's output tank.

Can't find it with a search, and perhaps may be mistaken where I saw it.  I have a question about it.  Anyone recall or know anything about this?

Thanks ... Grant/NQ5T
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Jim, W5JO
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« Reply #1 on: May 15, 2005, 03:37:23 PM »
Check your email Grant
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W3SLK
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« Reply #2 on: May 15, 2005, 04:38:51 PM »
The way I understand it is that you only need the 6:1 balun when using the Chump on 160M. All other frequencies, it will load 50Ω easily.
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Mike(y)/W3SLK
Invisible airwaves crackle with life, bright antenna bristle with the energy. Emotional feedback, on timeless wavelength, bearing a gift beyond lights, almost free.... Spirit of Radio/Rush
Jim, W5JO
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« Reply #3 on: May 15, 2005, 07:26:11 PM »
Using the balun makes the tuning on 75 much smoother and easier.  160 and 75 are the ones.  Rest is normal.
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W3SLK
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« Reply #4 on: May 15, 2005, 07:46:28 PM »
Yeah. Now all I have to do is get a LV transformer for mine and I'll be back in business. Unfortunatly, I think I'm going to have to bite the bullet and buy one from Peter Dahl.
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Mike(y)/W3SLK
Invisible airwaves crackle with life, bright antenna bristle with the energy. Emotional feedback, on timeless wavelength, bearing a gift beyond lights, almost free.... Spirit of Radio/Rush
nq5t
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« Reply #5 on: May 15, 2005, 07:59:46 PM »
Quote from: W3SLK
The way I understand it is that you only need the 6:1 balun when using the Chump on 160M. All other frequencies, it will load 50Ω easily.


I'm told that the L/C ratio in the GK500 final tank is also better suited to a higher Z load on 75/80.  Have balun ... just want to try it out. :-)

I got the information I was looking for in the original post, by the way.

Thanks
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Jim, W5JO
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« Reply #6 on: May 15, 2005, 09:36:38 PM »
Quote from: W3SLK
Yeah. Now all I have to do is get a LV transformer for mine and I'll be back in business. Unfortunatly, I think I'm going to have to bite the bullet and buy one from Peter Dahl.


Check Gary, WZ1M for a rewind.  He did the LHV transformer for mine and he was less expensive.

http://tubes_tubes_tubes.tripod.com/tubestubestubes/id33.html

Email for a quote.  No contact excpet I used him because Dahl and Heyborer cost much more.
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