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Flat EH- Antenna for 10- MHz

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ANTENTOP- 01- 2010, # 012

Flat EH- Antenna for 10- MHz

 

It was a lots deal to do at that day (when I made the antenna), so at last I just measured the antenna parameters but not tested the antenna in the Air. Figure 6 shows the parameters of the EH- Antenna. The antenna has band- pass in 930-kHz (at SWR less the 2).

 

Near the antenna was installed RF- Choke- several turns of coaxial cable around of a ferrite ring. The choke is visible on the Figure 5.

 

The next day a rain was coming. Water dropped from the antenna and I thought that no chance the antenna alive. Figure 7 shows the antenna into the rain.

 

 

 

Figure 7 Rain and Flat EH- Antenna

 

I turned on the EH-Antenna instead of my 42- meters wire… Noise (compare to 42-m- LW, the antenna installed from another side of my home) dropped down but stations went up. First QSO was with UA0AV, Sergey, Krasnoyarsk- 599. Next ones- M0IOW, RK4HE, SP3OOC and VK3XQ, Australia, my rapport 539, I heard him 56/79. May be good propagation… anyway, for small EH-Antenna placed at 2- meters above the ground- it is very good. Then I had QSOs with OK1HAJ, RV3QX, SP9FVO, YU5R, GM0IXO, ON3URT, OZ1HVL, UA4SKW, SP4NDV, UT0EG, DR600UL, RA9FFF, UN1L, RA9JAT, RM9WK, ON3WP/qrp, LA9SN, RD3BD, RV3SBS

So, I decided do not remove the EH- Antenna and tested it in next days. For me it was interesting how the antenna would be worked at show conditions.

 

.

73!

Vladimir, UA1ACO

St. Petersburg, October- 2009

 

 

See next article

Flat EH- Antenna for 10- MHz in the Winter

ANTENTOP- 01- 2010, pp.:61-62

 

 

 

Tube M89

 

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August 2, 2016 18:15

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