... I am also starting to build a 5 band hex beam and have downloaded the info from dl7io's web site. http://www.dl7io.de/reflectedw/reflectedw_data.html If...
I made my hub from a piece of 300mm x 500mm x 6mm aluminium plate. So on mine, from one flat side across to the opposite flat side would be 300mm. Darren ... ...
In Holger's Excel file "reflected-single-band-koordinaten.xls" he says that the single band demensions for 18.068 are 440 and 427. The 440 number agrees...
Hi all, I'm getting all the parts together to build a 5 band Hex Beam. So far I have 100m 14swg Flexweave 6 x 4m Shakspeare Spearlite 1056-400 Telescopic...
... Is this bare flex weave or insulated?, I've run into problems using insulated wire due to the calculated velocity factor of the wire being different to the...
Hi Darren & all, Thanks for the replys, The Flexweave is not insulated so it should be OK, got it from Nevada at Leicester Rally. Could you explain in a bit...
Hello Just a question. I have looked into the Shakespear telescopic poles. They are made of composite. Does that include carbon and does that affect the...
Hi all, I'm not to happy with the spreader clamping on my Hexbeam project, at present I'm using 4m fishing poles with a piece of half round aluminium around...
Jim, I understand that in using hose clamps to make the attachments of the elements to the spreaders that there is a danger of breaking the fishing poles when...
Hi all, I've just built a 5 Band Reflected W for use at the main station here. The beam is up at about 45' When I test the beam with a MFJ 259 i get the...
Please post your driven element lengths for each band. This will allow some of us to compare our hex beams to yours. Also, please advise us of wire size,...
One of the UK retailers (cant remember which one) said that the red/black cable which is used for rig power leads is approx 85-Ohm. I use 6mm cable for my...
Hi John / all Thanks for the reply, OK the spreaders are Shakespeare Spear-Lite 1056-400 telescopic poles, so I guess they must me Carbon Graphite although at...
Hi Darren / All What 6mm cable did you use, did you strip out some Twin / Earth (6242Y) or did you use Conduit Wire, something like 6491X or was it something...
... Yes 6mm conduit wire, I stripped back the insulation where the elements connect then soldered the elements to the feed line and then re-insulated the...
The choke balun should be made of type 43 mix ferrite toroids with an inside diameter that matches your coax I.D. Use about seven or 8 of them. They usually...
Error in my last email. I should have said the O.D. of the coax should match approximately the I.D. of the toroid. In other words 1/2 inch OD coax including...
Another happy ham outing with the Hex-Pac portable! Troop 204 / Pack 702 in Marietta, Georgia, hosted a Jamboree-on-the-Air activity last Saturday. We set up...
Hi John / all Thanks for the info on the Choke Balun, as of yet I still cannot find the beads in the correct mix here in the UK, I've tried searching the net...
I think you solved your problem yourself. Two feet is insufficient separation for your microwave beams. Wire beams are much more sensitive to a mass greater...
Hi all, I've just discovered hex-beams and I want to build one of these antennas. what are the formulas/spacings etc? also, what materials are best with which...
John, Type 43 isn't the material of choice for the RF choke. Type 77 is far better. Type 31 is also an option, but its Curie temperature is much lower than...
Thanks for the input Barry. I will have to try type 77. The type 43 has always worked well for me. I must say,however, this old dog is always willing to...
FB John. I use the Amidon FB-77-1024 beads and have found about 6 is adequate. These slide over the RG-213 (0.5" I.D.). 73, Barry W4WB ... 43 has always...
Hi all, Help! I have begun assembling a 3 band hex beam for 20,17, and 10 meters. Have thus far only installed the 20m element. I am using insulated #14...
Hello Gerry, where did you take the dimensions for this version (20/17/10m)? Have you done some calculation for this 3 bands? What are the dimensions you will...
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