If big brother doesn't help then little brother (in the form of homeowner associations and litigious neighbors, among others) will make sure that what we have taken for granted is forever lost. I kno
I have 8 of the AB-577 mast clamps and one of the middle guy plates available (all used items in good condition). $35.00 plus shipping from 89429 for all. That's about half what the commercial seller
The AB-577 components are sold. -- Jack, W6NF Silver Springs, NV DM09ji Migrating my e-mail to vhfplus@gmail.com. Please update you address book. Thanks! _____________________________________________
And I believe that WLW in Cincinnati still has a Blaw-Knox tower, although a new tower was placed in service in 1998. Strange critter...canteliver design guyed only at the middle for 700+ feet of tow
I put this same question to someone with many years of serious tower/antenna experience and his answer was an unequivocal YES! Apparently, without guying the force placed on the tower at the bracket
I just took down a couple of 55-foot crank-up towers from the QTH of a SK, one of which is tilt-over. The US Tower TX-455 nests at about 22-feet and uses a raising fixture that is easy to operate. Ou
Hmmm...my limited experience with US Tower has been quite the opposite. In responding to requests for documentation and identifying an older tower (turned out to be an early cut-rod TX-455) they have
Does anyone on the list have information on recalibration of a HyGain HDR-300 rotor? I am not talking about the gain/zero pots in the controller but a mechanical recal like one for which the manual s
I am curious as to what antenna configuration wore out the keyway. I have 3 HDR-300's (one with a control box issue that needs to be resolved) but have never had one in service. I have a KT-34XA (wit
I know what an overturning moment is...experienced one in my first college English class ;>) 73, -- Jack, W6NF Silver Springs, NV DM09ji _______________________________________________ ______________
I know what an overturning moment is...experiencced one in my first college English class :>) 73, -- Jack, W6NF Silver Springs, NV DM09ji _______________________________________________ _____________
Does the Hex Beam use some sections of aluminum with machined or molded plastic components attached? I picked up a quantity of antenna aluminum at a flea market and believe some of these items may ha
I just put a 2-element 40-meter vertical array in service using the Christman feed, cut for 7060kHz. I used my VA-1 to cut the 4 lines to 1/4-wave, measured the lines, calculated the length necessary
I also double-checked the coax after doing the calculations suggested by Jim Lux...they checked nicely. I'd forgotten about that...thanks for reminding me... -- Jack, W6NF Silver Springs, NV DM09ji _
Four questions: 1) Does anyone know the value of the secondary voltage on the transformer in an HDR-400/Roto-Brake controller? I have documentation on the rotor but it does not mention a secondary vo
An addendum to this e-mail... I guess the tower is a fold-over, not a tilt-over, that's hinged at about the middle. My mind can't deal with subtleties of that sort ;>) -- Jack, W6NF Silver Springs, N
More important than gain is front-to-back ratio. Yesterday, during the SSB NAQP, the f/b of my 2-element system on 40 was *very* evident. I am using the much-maligned Christman feed and find a minimu
I believe that should be Rancho Mirage... -- Jack, W6NF Silver Springs, NV DM09ji _______________________________________________ _______________________________________________ TowerTalk mailing lis
If anyone replies to Robb off the reflector please cc me. I have a 48-foot Rohn fold-over that I am planning to put up before the contest season and such issues are of importance to me, as well. 73,
WTAL-AM in Tallahassee used one when I worked there in about 1970, primarily because of the extremely poor ground conductivity (approaching that of a glass sheet). I was not on the engineering staff