Fiberglass solid. I forgot who actually makes the rods, but i found a local deal that can get it in 20 foot sections. I bought two 20 foot rods and sold off the extra sections. The cost is aprox $16.00 a foot.
the nice thing about solid is you do not need to worry about breaking or crushing it. Structural Shapes Rod Class: thermocur rod Major Material: Fiberglass Minor Material: 1.5" solid rod Outside Dimension: 1.50 Color: MILKY green Resin Name: green Length (Span for Grating): 240.000 Rick McCabe Customer Service Team Leader McNichols Company 45 Power Rd Westford, MA 01886-4111 978-692-4141 ext 227 (phone) | 978-692-0044 (fax) [email protected] www.mcnichols.com --- On Thu, 4/23/09, Joe <[email protected]> wrote: > From: Joe <[email protected]> > Subject: Re: [amsat-bb] Re: Cross Boom > To: [email protected] > Cc: "Jeff Yanko" <[email protected]>, "Billy Simpkins" > <[email protected]>, "Edward Cole" <[email protected]>, > [email protected], [email protected] > Date: Thursday, April 23, 2009, 6:43 PM > Just follow the suggestions on the web page that was > suggested and you'll be fine. > > But I am curious as to where did you find the 1.25" > fiberglass riod? > > Joe > > MM wrote: > > > > > Thanks for all of the good information. > > > > I am going to rebuild my Sat array this spring (its > time for a routine overhaul). > > I have a M2 436CP42UG and the M2 CP22 at opposite ends > of a 12’ (1.25”) solid fiberglass pole. I am converting > over to a 1.5” sold 14-foot fiberglass pole to give me > better clearance for other antennas on the tower. Kenpro > 5500 AZ/EL > > > > I never liked hanging the coax off the back since is > throws off the balance. > > When you slide the U-clamps Backward on the M2 boom to > compensate for the coax weight on the back, you end up with > the clamps on Thinner section of the Boom. > > > > Based on the theories, if I follow the coax routing > and avoid the half or full wave points I may be able to run > the coax down the boom? > > > > Would this work on the 70 cm too? > > > > Thanks Miles > > > > > > --- On Thu, 4/23/09, Jim Jerzycke > <[email protected]> wrote: > > > > > >> From: Jim Jerzycke <[email protected]> > >> Subject: [amsat-bb] Re: Cross Boom > >> To: "Jeff Yanko" <[email protected]>, > "Joe" <[email protected]>, "Billy > Simpkins" <[email protected]>, > "Edward Cole" <[email protected]> > >> Cc: [email protected] > >> Date: Thursday, April 23, 2009, 1:41 AM > >> It's here on Howard's site: > >> http://www.g6lvb.com/fibermetalboom.htm > >> > >> > >> --- On Wed, 4/22/09, Edward Cole > >> <[email protected]> wrote: > >> > >> > >>> From: Edward Cole <[email protected]> > >>> Subject: Re: [amsat-bb] Re: Cross Boom > >>> To: "Jeff Yanko" > <[email protected]>, > >>> > >> [email protected], "Joe" > <[email protected]>, > >> "Billy Simpkins" > <[email protected]> > >> > >>> Cc: [email protected] > >>> Date: Wednesday, April 22, 2009, 10:39 PM > >>> The coax shield coming off the antenna boom at > a right > >>> > >> angle > >> > >>> looks like another parasitic element being > added to the > >>> > >> antenna > >> > >>> causing severe distortion of the antenna > pattern. But if one > >>> installs the antenna in the X configuration > and attach the cross > >>> > >> boom in > >> > >>> a location away from any of the elements one > can tightly > >>> > >> run > >> > >>> the coax across the metallic cross boom with > little effect. > >> This > >> > >>> was tested by WA5VJB and is a published > article. > >>> > >>> I have my M2 436CP42UG mounted in this fashion > and it > >>> preforms well. > >>> > >>> 73, Ed - KL7UW > >>> maybe someone else can point to the link to > that > >>> > >> article. > >> > >>> At 11:41 AM 4/22/2009, Jeff Yanko wrote: > >>> > >>>> OK, I see where this is coming into play. > So > >>>> > >> it's > >> > >>> possible that the coax > >>> > >>>> shield could react to the feedpoint system > and > >>>> > >> pattern. > >> > >>> Now this raises a > >>> > >>>> question. If this is the case, has > anybody tried > >>>> > >> a > >> > >>> broadband choke balun to > >>> > >>>> limit this potential problem? If you > think about > >>>> > >> it, > >> > >>> the bigger issue with > >>> > >>>> coax effecting the radiation pattern is > improper > >>>> > >>> decoupling of the fed > >>> > >>>> point. If the outside shield is hot with > RF it > >>>> > >> will > >> > >>> radiated and effect the > >>> > >>>> pattern big time. If the coax is properly > >>>> > >> decoupled at > >> > >>> the fed point the > >>> > >>>> outside shield will ideally have zero rf > current > >>>> > >> on it > >> > >>> and ideally have no > >>> > >>>> impact on the pattern. > >>>> > >>>> Thoughts? > >>>> > >>>> > >>>> 73, > >>>> > >>>> Jeff WB3JFS > >>>> > >>>> > >>>> ----- Original Message ----- > >>>> From: "Jim Jerzycke" > >>>> > >>> <[email protected]> > >>> > >>>> To: "Joe" <[email protected]>; > >>>> > >> "Billy > >> > >>> Simpkins" > <[email protected]>; > >>> > >> "Jeff > >> > >>>> Yanko" <[email protected]> > >>>> Cc: <[email protected]> > >>>> Sent: Wednesday, April 22, 2009 11:09 AM > >>>> Subject: Re: [amsat-bb] Re: Cross Boom > >>>> > >>>> > >>>> > >>>>> Because the shield of the coax > >>>>> > >> "looks" > >> > >>> like a piece of pipe, and has the > >>> > >>>>> same effect on the antenna pattern > that > >>>>> > >>> you're trying to eliminate by > >>> > >>>>> going to a non-metallic cross-boom. > >>>>> Jim KQ6EA > >>>>> > >>>>> > >>>>> --- On Wed, 4/22/09, Jeff Yanko > >>>>> > >>> <[email protected]> wrote: > >>> > >>>>>> From: Jeff Yanko > <[email protected]> > >>>>>> Subject: [amsat-bb] Re: Cross Boom > >>>>>> To: "Joe" > <[email protected]>, > >>>>>> > >>> "Billy Simpkins" > >>> > >> <[email protected]> > >> > >>>>>> Cc: [email protected] > >>>>>> Date: Wednesday, April 22, 2009, > 10:55 > >>>>>> > >> AM > >> > >>>>>> Hi all, > >>>>>> I found this line confusing.... > >>>>>> > >>>>>> "But then if you go > insulated > >> then do > >> > >>> not run the > >>> > >>>>>> feedline along it either > >>>>>> or you just defeated the purpose > of the > >>>>>> > >>> insulated > >>> > >>>>>> boom." > >>>>>> > >>>>>> My question is if you run the coax > along > >>>>>> > >> an > >> > >>> insulated > >>> > >>>>>> crossboom, ie. > >>>>>> fiberglass, how could that affect > the > >>>>>> > >>> coupling of the > >>> > >>>>>> transmission line when > >>>>>> the object it is being attached to > is > >>>>>> "insulated"? > >>>>>> > >>>>>> > >>>>>> 73, > >>>>>> > >>>>>> Jeff WB3JFS > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> ----- Original Message ----- > >>>>>> From: "Joe" > >>>>>> > >> <[email protected]> > >> > >>>>>> To: "Billy Simpkins" > >>>>>> <[email protected]> > >>>>>> Cc: <[email protected]> > >>>>>> Sent: Wednesday, April 22, 2009 > 7:06 AM > >>>>>> Subject: [amsat-bb] Re: Cross Boom > >>>>>> > >>>>>> > >>>>>> > >>>>>>> It all depends on how the > elements > >>>>>>> > >> are > >> > >>> mounted. > >>> > >>>>>>> If at 45 to 90 degrees from > the > >>>>>>> > >>> crossarm, no propblem > >>> > >>>>>> and use anything, > >>>>>> > >>>>>>> But if in the same plane then > need > >>>>>>> > >>> insulated > >>> > >>>>>> crossboom, > >>>>>> > >>>>>>> But then if you go insulated > then > >>>>>>> > >> do > >> > >>> not run the > >>> > >>>>>> feedline along it > >>>>>> > >>>>>>> either or you just defeated > the > >>>>>>> > >> purpose > >> > >>> of the > >>> > >>>>>> insulated boom. > >>>>>> > >>>>>>> Billy Simpkins wrote: > >>>>>>> > >>>>>>> > >>>>>>>> Is a fiber glass or some > other > >>>>>>>> > >>> non-conductive > >>> > >>>>>> material necessary for a > >>>>>> > >>>>>>>> cross boom? What or the > >>>>>>>> > >> advantages > >> > >>> and > >>> > >>>>>> disadvantages versus a metal one? > >>>>>> > >>>>>>>> Thanks, > >>>>>>>> Billy KF0CK > >>>>>>>> > >>>> > _______________________________________________ > >>>> > >>>>>>>> Sent via > [email protected]. > >>>>>>>> > >> Opinions > >> > >>> expressed are > >>> > >>>>>> those of the author. > >>>>>> > >>>>>>>> Not an AMSAT-NA member? > Join now > >>>>>>>> > >> to > >> > >>> support the > >>> > >>>>>> amateur satellite program! > >>>>>> > >>>>>>>> Subscription settings: > >>>>>>>> > >> http://amsat.org/mailman/listinfo/amsat-bb > >> > >>>>>>>> > >>>>>>>> > >>>>>>>> > >>> > _______________________________________________ > >>> > >>>>>>> Sent via [email protected]. > >>>>>>> > >> Opinions > >> > >>> expressed are > >>> > >>>>>> those of the author. > >>>>>> > >>>>>>> Not an AMSAT-NA member? Join > now to > >>>>>>> > >>> support the > >>> > >>>>>> amateur satellite program! > >>>>>> > >>>>>>> Subscription settings: > >>>>>>> > >> http://amsat.org/mailman/listinfo/amsat-bb > >> > >>>>>> > >>>>>> > >>> > _______________________________________________ > >>> > >>>>>> Sent via [email protected]. > Opinions > >>>>>> > >>> expressed are those > >>> > >>>>>> of the author. > >>>>>> Not an AMSAT-NA member? Join now > to > >>>>>> > >> support > >> > >>> the amateur > >>> > >>>>>> satellite program! > >>>>>> Subscription settings: > >>>>>> > >>>>>> > >> http://amsat.org/mailman/listinfo/amsat-bb > >> > >>>> > _______________________________________________ > >>>> Sent via [email protected]. Opinions > expressed > >>>> > >> are > >> > >>> those of the author. > >>> > >>>> Not an AMSAT-NA member? Join now to > support the > >>>> > >> amateur > >> > >>> satellite program! > >>> > >>>> Subscription settings: > >>>> > >>> http://amsat.org/mailman/listinfo/amsat-bb > >>> > >> _______________________________________________ > >> Sent via [email protected]. Opinions expressed > are those > >> of the author. > >> Not an AMSAT-NA member? Join now to support the > amateur > >> satellite program! > >> Subscription settings: > >> http://amsat.org/mailman/listinfo/amsat-bb > >> > > > > > > > > > > _______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
