I have a chance to buy a used two element linearly loaded shortie-fourty beam at a low price. It is a KLM 40M-2B. I am a CW only operator, so bandwidth isnt of much concern to me. I would be putting
Jeff, I lost three of these insulators on two of the single element version. They cracked and dropped an element half each time(Not good). On the advice of my good friend N5AR, replaced mine with a 1
Did you reuse the black insert from the old insulators? They are designed to elevate the elements slightly in a gull wing in order to minimize element droop. When I had a 4/4 of 4el KLM's I lost some
Jeff, I bought a used one 12 years ago and had it up at the home qth here for 11 years, then moved it out to the NR4M contesting qth. Never had a problem with it. While it was set for cw, running low
Jeff, I had a KLM 4el "Big Sticker" 40 meter and was plagued with insulators deteriorating in the heat and ultra violet of the Arizona sun. I made some Lexan insulators that worked ok. I finally gave
I believe there are "early" ones and "later" ones. The early ones broke a lot and the later ones don't break as much. I have quite a number of the late ones in a box from a couple KLMs I scrapped if
Thanks for all the replies. It seems that the consensus is the 40M-2B has maintenance issues, especially with the Lexan element to boom mount cracking (which M2 has abandoned and redesigned - expensi
I've been contemplating supporting the elements also but not with Phillystran. Instead I would use some #14 hardrawn copper and wind up with a 2 el on 30M. I havent modeled it yet to see what spacing
I got quite a number of inquiries about these KLM boom-to-element insulators. I'll take $20 each + shipping. Mark, N5OT _______________________________________________ ______________________________
Jeff, When I converted my Big Sticker over to a 3 el 30 meter beam the old boom to element clamps lasted about a year. I got the new boom to element clamps from DX Engineering. I am happy with them s
Add another $13 for the new clamps and 1/4" hardware. After awhile it starts to add up but if the MTBF increases from 1-2 years to 8-10 years its a bargain. Carl KM1H ________________________________