Bienvenue chez ON5AV.


Description de la station décamétrique, 3.5 Mhz ==> 30 Mhz.

Tranceiver " FLEX 3000 " 0 ==> 100 watts   

Microphone YAESU MD-100

Ampli HF "AMERITRON AL-811".

Coupleur MFJ 986.

LP-100A Digital Vector RF Wattmeter

MFJ-1026 Noise Canceling

Software    "PowerSdr 2.72"

                   "DDUTIL V3.0"



GPA-404 Fritzel vertical


GPA-303 Fritzel vertical


Corner fed with 4:1 balun and coaxial chokes


Vertical delta loop for 80M, apex at 16 meters (SpiderBeam pole)



Fan dipole 40M 20M 15M 10M


More about the 80M vertical delta loop

First tried this antenna in 2012 using a tall tree in my neighbour's garden.
I had good results and was able to have contact with more then 110 countries.
Unfortunately this tall tree was swept down by a storm in January 2014.

I decided to put up the same set-up using a 18 meters high pole from Spiderbeam.
The size of the back garden being only 6 meters wide and 20 meters long, it was just enough to
raise the pole at 16 meters to support a small wire.
The total length of the loop is only 60 meters, so I needed some loading at the feeding point.


The horizontal part of the wire is around 2 meters above the ground.

The loop is fed at one corner using a 25 µH coil and a 4:1 balun.

I made some simulations with Eznec and found the real antenna to be very close to the Eznec prediction.
The vertical radiation pattern is not as good for DX as the theoretical full wave vertical delta loop.
On the other hand, my loop doesn't show directivity as the full wave loop does.


The SWR and bandwith are better then the predictions, but it might be from ground losses.

Here is a real world scan with miniVNA:

All in all, it seems to be a good "all around" local and DX antenna.


Description de la station 50 Mhz, 144 Mhz, 432 Mhz.

Tranceiver " FT897D " 5 to 100 watts output.

                   Antenne verticale 3 bandes.

                    Protection du récepteur par un filtre passe-haut 50Mhz.

Fabriqué et vendu par F5CYS.





Emetteurs backup:


FLEX 1500.



Ordinateur " HP HEWLETT PACKARD PC P6-2408EB Pavillon Intel Core i7-3770 ".

Deux moniteurs LG 22".

Moniteur MIMO (USB).

Software "WINDOWS 8.0".

                "HAM RADIODELUXE VERSION 6.2".

                "CW SKIMMER".

                 "CwGet V2.26" cw decodeur de UA9OV.

Ordinateur portable "PACKARD BELL".

 Moniteur externe Philips 22".                   

 Software   "WINDOWS 7 PRO".

                   "HAM RADIODELUXE VERSION 6.2".

                   "DX ATLAS SUITE".

Les deux PC sont reliés par Ethernet et HF.

Mise à l'heure par GPS "GPSGATE".


Portable, mobile:

 VHF-UHF tranceiver portable " ICOM ID31-E D-STAR ".

                                                     " MAAS AHT-2-UV ".


Appareil de mesure:

IMD meter by KK7UQ.


+ appareil de mesure classique.


Member of: UBA


                     BARTG #8962

                     BDM #03054

                     DMC #06109

                     EPC #20311  DIPLOMES

                     NDG #1343


Données en provenance de
Station active ou non ???
Derniers QSO.

Données personnelles.

Qsl Label

Construction d'un commutateur d'antenne.