Hello... im 5P1CC/OZ1BPZ.
Got my vhf/uhf license back in 1981 and got on HF in 1983, I have allways enjoind cw and its rarely if ever i have the mic connected to the rig,
I dont do paper QSL so pse qsl by E-QSL, or you can send me an email if you want to.
I sincerely do appreciate any contact/qso i make on the bands, but the qsl buro in my country is so slow, cumbersome and expensive that i simply dont bother using it,
I have had several rigs during the years, my first was the Yaesu fr50/fl50 tube rig, later replaced by an FT101EE and even later by a FT920 DM... All of those were great rigs for their time..:-)
A also had a completely homebuild from scratch HF transceiver back in the 90s, ufortunately it disappered during a major event back in the days.
In 2010 i sort of restarted the hobby by going QRP and for the time being my main rig is an Elecraft KX3 (No1900) sold as a kit. I also have a Sierra Wilderness Transceiver with the 14mhz bandmodule, wich i bought cheap on a fleamarket... it has some issues that i have to address before the /p season starts in 2016.
I also have several vhf/uhf mobile and handheld rigs, and a vertical dualbander for those bands.
This year i got on 4 meters with an commercial fm transceiver and a vertical antenna, and i have started the facebookgroup "70mhz Danmark", have a look :-)
I have an Icom IC-728 as a spare rig and i have more or less decided to use that as a baserig for a 144/70mhz transverter setup wich i hope will be on the air during 2016.
My antennas for the time being is an inverted v for the lower bands and a T-dipole for 14 mhz and up, both fed with laderline and homemade balanced antennatuner. The T dipole is to some extend similar to the "Dual Beam Pro" made and sold by G4GTW, and the lowband antenna has a lot of similarities with a G5RV..
Shown on the photos is the T-dipole as it looked this summr when i made and raised it. The dimensions are as follows.:
The main elements are 3,5 meters each made of 25mm aluminiumtube. The end elements are 2.5 meters in all made by 12mm aluminiumtube. This gives the dipole an electric length of a bit more than 5 meters, as the end elements works as capacatyhats as well as a part of the dipole.
The tubes are assembled in the middle by an internal glassfiberrod i got from a friend, and the feeder is mounted by selftapping screws.
According to MMana the antenna is resonant about 13,5 mhz in this configuration, i have not mesured this to confirm, because it doesnt matter much for effiency.
The dimensions is a kind of coincidental, it just had to be made of 2X6 m length of tube...however as it turned out i think there could be some interesting point to mention.
On 14 mhz the whole antenna is just a plain dipole with bended ends.
On 18 mhz the main elements is a bit too short to be full quarterlengths but close enough, i think.
On 21 mhz the main elements is close to be full quarter elements.
On 12 and 10 meters the whole antenna is 2 X halfwave which could mean a bit of gain.
On 6 meters the main elements are 2 X 5/8 wavelength which also could give a bit of gain... in fact this antenna produces the strongest signal i ever have had on 6 meters :-)
The feeder is 15 meters of 450 ohm ladderline going to my homemade tuner... the tuner is of importance, i will put pics and schematics here soon.
My antenna for the lower bands is an inverted V made as you can se on the photo i have taken from MMana with my telephone.
The radiation pattern for this antenna is also shown for 14 mhz... very interesting low angle radiation and with a bit of isotropic gain ....and to some degree this antenna looks a bit like the highly controversial G5RV in an inverted configuration...
For the time beeing this is the 2 most succefully antennas i have had on my very small lot, (10 by 14 meters)... and i think the T dipole is a keeper.
Someday i would like to make a shootout with my antenna and the contraption sold by G4GTW, but there is no way that i am going to pay more than 2000 kr for 10 meters of aluminium pipe and some obscure "feedpointbalunimpedancetransformer" that simply wont match the feeder to the antenna without severe losses....period.
Enjoin the pics, and feel free to ask questions and/or comments via my mailbox.
6966610 Last modified: 2015-12-30 20:10:14, 5400 bytes
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