In a message dated 96-06-03 08:53:26 EDT, you write:
>> I'm planning on only one tower this summer....hope to put up a
>> 1/4-wave 160M vertical built from Rohn 25. (I found a very good
>> deal on one Rohn 25 insulated section)....so thought I would do
>> the elevated radial thing. (I've done it for my 80M 4-square, and
>> it works great there. I used G-10 fiberglass rod for insulated
>> bases.) I have on hand over half of the Rohn 25
>> sections I need, and I have literally miles of 2100 Philystan I
>> picked up for pennies when RFE went out of business.
>> If anyone has built a full-size 1/4-wave Rohn 25 160M vertical,
>> please email back to me. I'd like to ask a few questions.
Hi, Glenn --
Thanks for checking in. First of all, you'll have to use a doubled 2100
Phillystran as the Rohn spec calls for 3/16 EHS (3990 pound strength); the
2100 won't cut it.
Does your question have to do with the feed system more than the 25G
mechanical system? This is a brand new reflector so not many participants
yet. Are you on the Topband reflector? Those are the guys that have the
most experience on big verticals so I would also post your question on there
Just follow the Rohn spec for construction and you'll be in good
shape. BTW, can you give me more info on the G-10 material? Where do you
get it, do you have to machine it, how is it to work with, strength, etc? I
don't know much about it but it sounds like the way to go for a nice
insulated tower. Thanks.
73, Steve K7LXC
TOWER TECH -- professional tower supplies and services for amateurs