hello to all and forgive me for what appears to be, although unseen by me for whatever reason, duplicate posts. I sent my posts in on Sunday - nothing showed here (although other posts were coming in
hmmmm.... ok. I am keeping the heft of the -125 antenna (I found 2 of them locally like new for almost 1/2 the M6DX price new) ... and converting them to the newer (i.e. better modeling having been d
Jim, Good question (why doesnt M2 just redesign it).... note on the F12 the distance from the boom to the LL is considerably less than 1/4 wave on 15.... once the LL is reached I believe (and another
I used the ARRL AB values and found that the distance recommended from the tower out was problematic. I had quite severe interaction to the guys with only about 6 from the tower to the first insulato
not to anyone specifically in this list of replies ... I had ~6 of steel from the tower to the first insulator and many insulators after that using the ARRL AB values. I had 3 sets of guys 40, 80, 12
Jim, I have to assume that that 50 is not 1/2 of the total length of that top guy correct? Are you using twice the size philly as EHS per the Philly requirements sheet? Gary K9RX Yep. I'm especially
Hi RIck, Indeed it is quite true with yagis depending on the type of design be it OWA vs < 50 ohm with transformation the point where X=0 and minimum SWR can vary and can actually be multiple points!
Im testing a yagi... I can raise it to ~37 for testing and lower it to about 8 for adjustment ... it was made as a duplicate to another one and testing showed it to be just that a duplicate. Until it
Thanks to the replies here and direct... preface my responses with this statement: although I can reply to these as I have below that doesnt mean it is definitive although checked as stated ... obvio
its back to normal now ~4-5 hours since the rain ended. Gary K9RX Gary, it could be an antenna issue or a feed line issue. I suggest you temporarily dangle a new coax line from the feed point down to
Thanks for the comments it is a hairpin design. It is an M2 6 element 15 that was built using their 15M6-125 antenna and converted to their 15M6DX ... so I refer to it now as a 15M6DX-125. Anyway it
No but its the same coax that was used on the first antenna and is now being used on the 20 which at 8 off the ground (too windy to raise up) is showing what Id expect to see. Also coax cant clear ou
Anyone know the difference between ASTM A153 and ASTM A475 galvanizing for guy lines? Cargo Control has EHS guy line at roughly 60% the price of other places same ratings, same weight. Seems too good
An update to my post on rain and connections for those that might be interested... Ive had beams since 1978... I was off the air from 1990 through 2005 and when I returned it was in Arizona where rai
One set of guys would be fine. Put it at 47 it wont go anywhere assuming you have a decent base. Dont underrate the guys go with 1/4 or even 5/16. With this I dont see any reason why youd need to wor
I believe it was called K factor.... the turning radius X the weight of the antenna... if more than one antenna add these individual values... it is indeed more a rating of the effect of the force an
Ive done quite a bit of modeling on 40s and their interaction to 15 (and other bands)... Im installing a 40M4LLDD 30 above the top of a 12 element (6/6) 15 stack. Others have measured this antennas (
there's no "probably" to it! It is lowest (in frequency) closet to the ground. I have now range tested 2 15 meter 6 elements and 2 20 meter 5 elements as well as tested a 40 meter dipole and 4 elemen
agreed - but I have modeled my 6 element 15 and 5 element 20's. They are conversions using a 15M6-125 to create a high strength 15M6DX (as it models much better, especially in a stack) which I call 1
The purpose of the saw horses was to assemble the antennas - not to be used for any real testing beyond that other than a sanity check that things aren't way off (i.e. 10:1 SWR). I do find that testi