I like to call it the hyperbolic forward gain radiation pattern. You know, like Burger King -- some purveyors offer bigger whoppers than others. You heard it...
With some companies, the engineers write the specs. With other companies, the marketing department writes the specs. Ever wonder why Cushcraft and HyGAIN...
Pray tell, what "log periodic gain calculator" were you using? In my experience, LP's yield quite a bit less forward gain per boom length than Yagi's. If you...
Yes, you exactly answered it. It is not a log periodic; it is also NOT a Moxon beam, as many like to call it. It is simply a normal beam with full size...
Ben, actually most of the questions you ask are answered in the “details page” for each component you speak about. 1. 30mm is the OD, not the ID; the...
From what I read in eHam, looks like this rotator will handle a Spiderbeam and much more with no problem. But, would you install it inside or outside of a...
The HD-73 has supported a TH6-DXX Thunderbird handily in high winds here in Northern Virginia. Our club has a large inventory of these reliable rotors. Rotor...
... I think so but to be on the Safe side i wuld place IT facing 90 deg of the spiderbeam to reduce any effects that may be. Butt all nit veryfid just my...
Well I know an awful lot about Spiderbeams, but I have never stacked anything above or below one. So this is just my guess but. I totally disagree. I would...
Hi Ben, Mounting a 2 meter beam with the Spiderbeam is possible, but the aperture of the Spiderbeam is significant, so you will need to compromise and mount...
Actually, I would line the up the booms of the two antennas. The 2m yagi has tiny elements in comparison to the Spiderbeam. So it'll then look just like a...
I'm considering changing things up a bit on my Spiderbeam build with regards to the insulators for the directors and reflectors. Instead of using the plastic...
Hi Jim, I do not know if they are dipoles or a mix of yagi elements. I just downloaded the file the other day and have yet to review the content. 73's Randy...
Hi Thomas, I do not think the soldered terminal ends would present any problem at all. I use a system of crimped collars, and it works great. I too have used...
Tin in free air will give tin plague due to oxid. 73s Erik OZ4KK ... -- Venlig hilsen - Best regards - Erik Jakobsen Licensed HAM-RADIO with the callsign OZ4KK...
I have done it both ways. No particular difference in performance, but cost was a bit higher with the home brew version. My experience was that the center...
Hi Erik, You raise a good point. I have never had a problem with tin plated copper or with tin/lead soldered copper connections in the air. I also know the...
Does anyone have a 5 band spiderbeam antenna simulation file for MMANA-GAL program that can reproduce the actual results as per design? I downloaded the file...
I have a HD 5 band Spiderbeam and 10M HD mast with tripod and rotator at base. I am thinking to buy a larger mast and the 14.5M HD mast seems to be the best...
The key to the answer is in the details page of the mast. It's top segment is 40mm, and bottom segment is 80mm. Like the 15m mast, it will need to be guyed at...
Hi Kenwood, First, understand I am a farmer. So cringe at buying anything I cannot build myself. So, I downloaded the instruction manual, visited every other...
Kenwood, I have tried PVC in various antenna projects, and found it far to heavy for anything but the center element termination post for Hexbeams, or as...
I have avoided this thread for obvious reasons. J However I would like to very strongly make one point perfectly clear: You will save yourself lots of hours of...
As someone who made just a slight alteration in construction of the feed lines, I can attest to things being thrown way out of whack! Rick really shouldn't...
Hey Ken, In some ways I was over cautious, and in other ways, got a bit sloppy. I some how got it in my head that with the shrink-rapped parallel wire section...
