High Z with G5RV

Useful information regarding antennas for SDR products.
m0pai
Posts: 2
Joined: Tue Jan 03, 2017 3:31 pm

High Z with G5RV

Postby m0pai » Tue Jan 03, 2017 3:42 pm

Hi,

I'm looking at using the High Z port of the RSP2 with the G5RV and wasn't sure if i needed to add the 1:9 Balun inline, the feeder lengh is quite long 40ft+.
Any ideas?


Thanks
Last edited by m0pai on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
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g7jur
Posts: 7
Joined: Mon Nov 16, 2015 9:55 pm

Re: High Z with G5RV

Postby g7jur » Wed Jan 04, 2017 4:57 pm

Just connect it to the hi-z port, it will work fine.
Inner of the coax to P connect N und ground together and the coax outher

Philip G7JUR
Last edited by g7jur on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
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m0pai
Posts: 2
Joined: Tue Jan 03, 2017 3:31 pm

Re: High Z with G5RV

Postby m0pai » Wed Jan 04, 2017 9:48 pm

Thanks Philip,

Been running it on the High Z since yesterday and working well.

HNY 17

Regards

Adrian
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joeruffer
Posts: 8
Joined: Thu Feb 23, 2017 4:37 am

Re: High Z with G5RV

Postby joeruffer » Tue Feb 28, 2017 9:55 pm

What connection at the Hi-Z port is made using 450 ohm ladder line?

Thx Joe KA4AMX
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g1hbe
Posts: 224
Joined: Sat Jan 17, 2015 3:28 pm
Location: Cheshire

Re: High Z with G5RV

Postby g1hbe » Tue Feb 28, 2017 10:12 pm

Ladder line is balanced, so connect across P and N. Ignore the G terminal.

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Andy

joeruffer
Posts: 8
Joined: Thu Feb 23, 2017 4:37 am

Re: High Z with G5RV

Postby joeruffer » Thu Mar 02, 2017 1:48 am

Thx so much. I wanted to be sure nothing was needed to match the 450 ohm ladder line to the 1k ohm impedance listed for the High Z port.
THX AGAIN

Joe KN4AMX
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g1hbe
Posts: 224
Joined: Sat Jan 17, 2015 3:28 pm
Location: Cheshire

Re: High Z with G5RV

Postby g1hbe » Thu Mar 02, 2017 1:05 pm

No problem. 450 ohm into 1k is regarded as a good match, as it's only a 2:1 ratio. On receive it makes little difference anyway. Happy twiddling!

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Andy

ekendraed
Posts: 8
Joined: Sun Apr 16, 2017 5:52 am

Re: High Z with G5RV

Postby ekendraed » Sun May 07, 2017 3:01 pm

Last edited by ekendraed on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
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