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F5OHS France flag France

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Ham Member Lookups: 13570


My Setup:

  1. Transceivers: Icom 7600, 781, 706.
  2. Antennas:
  • Titanex V160HD vertical with 128 radials, each 40m long,       
  • Home made ATU (160/80m) with 4 options,
  • Titanex AF5 ATU (160/80/40m) 5 kW PEP (previous box),
  • Mosley Pro 96-3 (3el 40m, 4el 20 to 12m, 6 el 10m) @ 22m,
  • Create AFA-30 yagi (2el HB9CV for 30m) @ 25m,
  • Create AFA-75 yagi (2el HB9CV for 80m) @ 22m,
  • 8 element LFA yagi for 6m, 12.50m boom @ 25m,
  • Titanex RX antenna SES 160m, SES 80m (360-degree rotation),
  •  RX loop by KC2TX 160/80m.


Worked the 40 zones on 160m in one season yes

My other hobbies:  Motorcyle (BMW K 1200 RS + K 1600 GT Sport), Parachuting, Karate (Black Belt, 2nd Dan)

Cox, my faithful four-legged friend


The antenna tuning unit used with this 27m Titanex vertical was originally designed to operate on 40, 80 and 160m (left photo). With an existing 40m Yagi in place, it seemed advantageous to remove the 40m setting, then to replace by another 80m setting. Therefore it was decided to re-design the original ATU by using more performing components (low-loss inductor, better variable capacitors, vacuum relays). Contact was made with F6ARC who modified the same box at FM5CD’s QTH in 2011. He also suggested to add another frequency setting on 160m. F5OJG and I purchased news materials as required. After all the wiring was completed (right photo), adjustments were carried out at the bottom of the vertical in the presence of the interested persons! After a few tries (with an outside temperature of 3°C), we obtained a perfect 1:1 SWR on 1.820, 1.840, 3.520 and 3.790 MHz.

The coil inductance can also be slightly changed, using a remote control system. Under these conditions, optimizing for minimum SWR becomes really easy. This makes more efficient use of the bandwidth on either 80 or 160m. 

Motorized tuning elements are located on the right side of the box (12 vdc window lift motor with limit switches).

One air relay is used to switch between 80 and 160m. Four vacuum relays are used to select the 4 different 80/160m settings. Resonance is obtained at 3.790 MHz using one capacitor, resonance at 3.520 MHz by connecting another capacitor in parallel.



Photos below when I was in the army (1st RHP) in Tarbes... (9 months in Djibouti)




Thank you for visiting my page, see you on the air!

Regards from "Dom", F5OHS


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6161501 Last modified: 2015-07-16 00:20:11, 9597 bytes

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QRZ Logbook Summary for - F5OHS
Latest Contacts for F5OHS at QRZ.com
dedateband mode grid Country op
ZS6BYT 2014-02-22 10m SSB KG43fr South Africa Scott Bigwood
YC6HAI 2013-12-29 40m SSB PI06to Indonesia ANDA YUDAS
YB7GRN 2013-12-29 40m SSB OJ20fv Indonesia Ronny Ekky
T6JP 2013-12-28 40m CW MM21rm Afghanistan Jesse Peters
KC3BER 2013-10-30 12m SSB FN20oe United States Louis W Lang
VE2TI 2013-10-30 12m SSB FN35su Canada Jean Morin
J69AZ 2013-10-16 40m SSB FK93mv St Lucia ANCLETUS ERNEST
TF2MSN 2013-09-24 17m RTTY HP84xh Iceland Odinn Thor
T6MH 2013-08-15 15m PSK31 MM21um Afghanistan Mike
J69DS 2013-07-25 20m RTTY FK94ma St Lucia Frans van Santbrink
TF2MSN 2013-07-24 17m SSB HP84xh Iceland Odinn Thor
J68HZ 2013-06-22 40M RTTY FK94mb St Lucia Dr. William Joel Schmidt, Jr
J68HZ 2013-06-22 40M SSB FK94mb St Lucia Dr. William Joel Schmidt, Jr
EA8CTF 2013-06-12 6m SSB IL18sl Canary Islands JAVIER G
J68HZ 2013-06-10 20M SSB FK94mb St Lucia Dr. William Joel Schmidt, Jr

Book Totals: 89 qso's   63 confirmed Get a free logbook at QRZ.COM

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