LNR Precision Par EndFedZ EF-SWL Antenna

Useful information regarding antennas for SDR products.
Whitecup
Posts: 9
Joined: Mon Feb 04, 2019 1:34 pm

LNR Precision Par EndFedZ EF-SWL Antenna

Postby Whitecup » Mon Feb 04, 2019 1:41 pm

I have the RSP2pro and would like to attach the LNR Precision Par EndFedZ EF-SWL antenna to the HIZ port.
This antenna has a built in 9-1 balun already and attaches to a PL-259 connector.
Any suggestions?

Thank you
Last edited by Whitecup on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
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Whitecup
Posts: 9
Joined: Mon Feb 04, 2019 1:34 pm

Re: LNR Precision Par EndFedZ EF-SWL Antenna

Postby Whitecup » Mon Feb 04, 2019 7:20 pm

Here are the types of connections I have found on the web.
So $200 for the SDRplay $100 for the antenna $30 for USB cable... all quality products and now I have to Jury rig a whip axx connection to the SDRplay?

It just doesn't sit right with me and I hold a extra class license and enjoy experimenting.

Image

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I will most likely get this and cut of the end off I don't need and attach it like picture 1 and 4

Image
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Spider
Posts: 6
Joined: Sun Jul 02, 2017 4:40 am

Re: LNR Precision Par EndFedZ EF-SWL Antenna

Postby Spider » Tue Feb 05, 2019 2:27 am

G'day whitecup, I would suggest that you attach the ant. to input A via an adapter first. The balun in the EndFed is there to reduce the impedance to a low level. Otherwise wire up a so239 socket to the HiZ input and compare results. Good SDRing Max vk2tti.

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Whitecup
Posts: 9
Joined: Mon Feb 04, 2019 1:34 pm

Re: LNR Precision Par EndFedZ EF-SWL Antenna

Postby Whitecup » Fri Feb 08, 2019 3:23 am

OK, I present a experimental prototype connection solution. Some rummaging in the radio parts box revealed 12 gauge solid and stranded copper wire. Will the connection work? how well? we shall see.
Image

BNC male to UHF female SO-239 SO239 and BNC Female Jack to AV 2-Screw Terminal Block Balum Connector

Image

12ga solid wire, thinner 14 ga probably better

Image

12 ga stranded wire only used a small amount

Image

Image

flipped unit over to match the + with the P

This will be connected to the LNR Precision Par EndFedZ EF-SWL Antenna which has a 9 to 1 balun already

Testing results in the next few days.


Thanks
Last edited by Whitecup on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
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Whitecup
Posts: 9
Joined: Mon Feb 04, 2019 1:34 pm

Re: LNR Precision Par EndFedZ EF-SWL Antenna

Postby Whitecup » Fri Feb 08, 2019 3:05 pm

Changed from solid 12ga to 16awg stranded speaker wire fit in holes better and might have better connection. CHECK that 16awg would not hold in the A/V unit. Used 6 strands twisted together from the 12 ga holds much better

Image

Installing antenna over the next few days, as always the most time consuming part.

Thanks

Whitecup
Posts: 9
Joined: Mon Feb 04, 2019 1:34 pm

Re: LNR Precision Par EndFedZ EF-SWL Antenna

Postby Whitecup » Fri Feb 08, 2019 3:27 pm

This is the feed line
Image

The LNR Precision Par EndFedZ EF-SWL Antenna

Image
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glovisol
Posts: 390
Joined: Thu May 10, 2018 6:42 pm
Location: Piedmont, Italy

Re: LNR Precision Par EndFedZ EF-SWL Antenna

Postby glovisol » Fri Feb 08, 2019 7:03 pm

Hi Whitecup, please consider that for best results and for input protection the balanced input must be fed thru a low capacitance toroid transformer, there are very many examples in as many threads in this Forum.

Hope this helps,

glovisol

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Whitecup
Posts: 9
Joined: Mon Feb 04, 2019 1:34 pm

Re: LNR Precision Par EndFedZ EF-SWL Antenna

Postby Whitecup » Fri Feb 08, 2019 8:49 pm

Thank you glovisol.

I was hoping the wideband 9:1 transformer wound on a binocular core would address this.

Image

Just pulled out the Jackite Fiberglass Telescoping Kite Pole for the antenna, it will be a sloper. I collapsed the top 3 sections and tape them so it doesnt break. So the top is at about 25ft. The other end will be attached to the house. Then I have to ground it.

Image

Thanks

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Whitecup
Posts: 9
Joined: Mon Feb 04, 2019 1:34 pm

Re: LNR Precision Par EndFedZ EF-SWL Antenna

Postby Whitecup » Fri Feb 08, 2019 10:26 pm

Ok, As a test fit, I threw the antenna up about 10ft in a tree , so the antenna is horizontal about 5 ft off the ground.
No ground yet.
Connection prototype is holding well.

Heard
Grid: EN61gn
utc local level band freq station
1800 Noon 6.5 22m 13.670.000 Africa
1800 Noon 8 25m 11.930.000 Radio Habana Cuba
1800 Noon 6.5 MW 720 WGN
1800 Noon 8 MW 560 WIND
1800 Noon +20 MW 890 WLS

Thanks

Reason: No reason

Whitecup
Posts: 9
Joined: Mon Feb 04, 2019 1:34 pm

Re: LNR Precision Par EndFedZ EF-SWL Antenna

Postby Whitecup » Sat Feb 09, 2019 1:36 am

Image

Added this cable and have the SDRplay in another room about 20ft away, works well
TRIPP LITE USB 2.0 Hi-Speed Active Repeater Cable A/B - M/M 480Mbps, 50' (U042-050)

Elevation Grounded UTC Local Level Band Frequency Station

5ft high No 0000 1823 +35 49m 5.920.000 World Harvest Radio Cypress Creek, South Carolina USA
5ft high No 0000 1823 +25 49m 6.115.000 bro joe WWCR Nashville, Tennessee, USA,
5ft high No 0030 1830 +15 49m 6.030.000 Radio Marti Miami, FL
5ft high No 0100 1900 +15 49m 6060 Radio Habana Cuba Cuba
5ft high No 0100 1900 +10 49m 6020 China Radio International English beijing china
5ft high No 0100 1900 +20 49m 6000 Radio Habana Cuba English Cuba
5ft high No 0100 1900 +20 49m 6185 China Radio International English beijing china
5ft high No 0100 1900 +35 49m 6.115.000 Financial Survival Melody Cedarstrom English Nashville, Tennessee, USA,

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