[TowerTalk] Drive-in Rohn Base for 25G

[kb0fhp@comcast.net]

Thanks David:

That makes perfect sense.  

It just makes it a bit more difficult, since I go down about 3 inches and I reach solid slate.  It is the absolutely the worse stuff to dig I have ever seen.  I was looking at possibly drilling large holes and bolting the tower to the rock.  While I like to play with large explosives, the neighbors tend to frown......:)

Scott

-------------- Original message -------------- 

> On the tower side I would say, no problem. However on the house side you 
> may want to consider a change. Assuming you live somewhere that the ground 
> freezes you may want to consider a base under the tower down below the frost 
> line. without that frost could lift the tower while the house doesn't move, 
> possibly damaging the house or brackets. 
> 
> 
> David Robbins K1TTT 
> e-mail: mailto:k1ttt at arrl.net 
> web: http://www.k1ttt.net 
> AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net 
> 
> 
> > -----Original Message----- 
> > From: towertalk-bounces at contesting.com [mailto:towertalk- 
> > bounces at contesting.com] On Behalf Of D. Scott MacKenzie 
> > Sent: Thursday, September 22, 2005 03:09 
> > To: NØATH; towertalk at contesting.com 
> > Subject: Re: [TowerTalk] Drive-in Rohn Base for 25G 
> > 
> > Thanks Dave: 
> > 
> > I was looking at attacing it FIRMLY to the framing. I was also going to 
> > re-enforce the header boards where I was going to attach the house 
> > brackets. 
> > Then I need to find a decent rotor... 
> > 
> > -----Original Message----- 
> > From: towertalk-bounces at contesting.com 
> > [mailto:towertalk-bounces at contesting.com]On Behalf Of NØATH 
> > Sent: Wednesday, September 21, 2005 10:55 PM 
> > To: towertalk at contesting.com 
> > Subject: Re: [TowerTalk] Drive-in Rohn Base for 25G 
> > 
> > 
> > Scott - You will probably get several replies on this one - In my opinion 
> > you shouldn't have any 
> > problem doing this if your mounting bolts are into some real wood framing 
> > and not just into a thin 
> > facer board - I had a similar setup years ago except I was higher above 
> > the 
> > brackets than you are 
> > contemplating and I had considerable more weight ( 151 pounds ) sitting on 
> > the mast pipe. 
> > The only problem I had was broken rotors and elongation in the bolt holes 
> > in 
> > the tower legs. 
> > ( Above the brackets) The tower was as solid as an anvil in cement. 
> > 
> > Dave / NØATH 
> > 
> > 
> > ----- Original Message ----- 
> > From: "D. Scott MacKenzie" 
> > To: 
> > Sent: Wednesday, September 21, 2005 9:29 PM 
> > Subject: [TowerTalk] Drive-in Rohn Base for 25G 
> > 
> > 
> > I plan to put up a small and meager 25G tower, and bracket it the second 
> > floor and to the first floor. Total tower height will not exceed 35 feet 
> > (10' above second floor bracket). Antennas will be Hy-Gain TH3Mk4, 
> > possibly 
> > a CC 5el 6M beam, and a 2M M2 2M9SSB....but I a being optimistic... 
> > 
> > My question - Can I use the Rohn drive-in base plate for the tower? If 
> > so, 
> > to what antennas am I limited - if just VHF, that would be OK.... 
> > 
> > Thanks in Advance 
> > 
> > Scott, aka KBØFHP 
> > 
> > _______________________________________________ 
> > 
> > See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless 
> > Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with 
> > any 
> > questions and ask for Sherman, W2FLA. 
> > 
> > _______________________________________________ 
> > TowerTalk mailing list 
> > TowerTalk at contesting.com 
> > http://lists.contesting.com/mailman/listinfo/towertalk 
> > 
> > _______________________________________________ 
> > 
> > See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless 
> > Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with 
> > any questions and ask for Sherman, W2FLA. 
> > 
> > _______________________________________________ 
> > TowerTalk mailing list 
> > TowerTalk at contesting.com 
> > http://lists.contesting.com/mailman/listinfo/towertalk 
> 
> _______________________________________________ 
> 
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather 
> Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions 
> and ask for Sherman, W2FLA. 
> 
> _______________________________________________ 
> TowerTalk mailing list 
> TowerTalk at contesting.com 
> http://lists.contesting.com/mailman/listinfo/towertalk