40 - 80 Meter Fan Dipole with 1:1 Balun Review

-

Greetings and hello, hope all is well. Since I built the 40-80m Fan dipole antenna I have been much more active on the 80m band, this antenna with its 1:1 balun has been receiving many excellent signal reports from both short and long skip local and DX. 
The SOTA wire is an excellent radiator and combined with a 1:1, 50 ohm balun which I bought  a Diamond BU-50 rated to 1200 watts seems really good despite its small physical size, it appears to be working very well so far with 400 watts. I am pleased to report it has not shown any problems or issues over the winter months where we have had lots of snow and ice. The homebrew 40-80M FAN DIPOLE, YES! I would definitely recommend. Also, I recommend fitting a balun to any dipole made for HF as it does help to prevent unwanted RF return and reception interference that is often picked up on the feed line. Since I fitted the balun, I have noticed a positive difference whilst using it. The dipole seems to be a very good performer all round on the 80m band and I have been hitting North and South America as well as Asiatic Russia and North Africa up on the DX portion of the band over the winter months as well as booming up and down the UK and across to EU. This winter has been really good on 80m since I built the 40-80 Fan Dipole, much better than my previous antenna set ups. I am glad I went to the effort, well worth it and it was easy and inexpensive. Have a look at the homebrew 40-80 fan dipole video if you want to see how I made it with all of the dimensions. Its on my YT channel or further down the blog posts.

I hope to hear you later maybe on the 80m band during my Sunday night live check in, on my ham radio YouTube channel from around about 22.00 utc (10pm Local). It wont be long before 20m is back in full swing each evening and the DX will be plentiful so I best get on 80m a few more times  before hand and work a few more amazing stations. Thank You for all of the Calls, keep them coming in!  73. 

Comments

Post a Comment

Popular posts from this blog

New DX Contact 0n 12 Meters

-
Image
Today I managed a nice QSO with Tom ZD7X who is located at St. Helena which is quite a distance away from my location. I managed to work Tom ZD7X with a 5/9 report operating my FT-767GX with my home brew 20m delta loop assisted with the MFJ-969 to tune the antenna with 50 watts on 12 meters. 12M is rarely open and I have only had a few QSOs on this band so I guess the new Cycle has begun at last! Good DX de 2E0HTS 73
Read more

Full Size Delta Loop for 20M

-
Image
I came across a simple delta loop design courtesy of dxzone found on the net some time ago and have been planning to give it a go for a while. This weekend I had a couple of hours spare, so I decided to give it a go using some 2mm multi strand wire cable, a dipole centre and a mixture of 75 ohm and 50 ohm coaxial cable. The delta loop is supposed to be resonant on 20 meters but I found it to be a little high so at present I am tuning the Loop with my mfj-969 which copes extremely well. The resonant frequency is 13.2 MHz at the moment so the next chance I get, I shall shorten the overall length making sure that each of the three sides are still equal in length, and hopefully adjusting the antenna for maximum performance ATU free for 14.2 MHz. I believe the miscalculation in the resonant length is probably down to the fact that my wire is covered in the plastic sleeving from the manufacturer which always effects the swr as I have noticed in past experiments with dipoles you always get sl
Read more

Homebrew 40/80 Trap Dipole Design

-
Image
This Antenna design was one that I used about 4 years ago, it worked exceptionally well on 80m and 40m. The size of the antenna makes a Half wave length on 80 meters, and with the traps a half wave on 40m with a SWR (standing wave ratio) of 1:1-1.5 across both bands. It worked well also on 20m with the use of an A.T.U (antenna tuning unit). I made my version of this antenna using 3mm multi strand copper cable which I left covered by the PVC insulation. The traps can either be home brewed using some 40mm diameter plastic drain pipe and winding wire around the pipe approximately 10 turns, then connected in line after the 10 metre lengths. Or the alternative is to purchase some commercially made 7.1 MHz traps, and fit them in line the same way. The antenna can be fed with 50 ohm coax with a home brew balan or again a commercially purchased balan. The wire lengths of the dipole are 2x 10 metres and 2x 6.7 metres as shown on the diagram above. This antenna can be mounted quite low to the gr
Read more