Charlie Tango 11m DX Radio Group Forum
Would you like to react to this message? Create an account in a few clicks or log in to continue.


Welcome to the Charlie Tango DX Group. The home of ALL things Radio - CB, 11m DX, Amateur, PMR446, PLD, Network and Data. We welcome all radio enthusiasts of all knowledge levels. Join today and claim your own unique World Famous CT Call-sign
 
HomeEventsCalendarFAQSearchRegisterLog in

Navigation
Useful Radio Sites
Log in
Username:
Password:
Log in automatically: 
:: I forgot my password
CT Bill Board





Views This Year
All Time Views
Classified Adverts

Latest topics
» South Coast PMR net report
DIY aluminum antennas Icon_minitimeToday at 12:21 am by Chickenfoot@1987

» Whats all this FT 8 stuff then ?
DIY aluminum antennas Icon_minitimeYesterday at 11:26 pm by Wireless

» new member and call sign request (Issued)
DIY aluminum antennas Icon_minitimeYesterday at 10:10 pm by jelliott8521

» New but old member
DIY aluminum antennas Icon_minitimeYesterday at 9:34 pm by BigAl1304

» Call sign (Issued)
DIY aluminum antennas Icon_minitimeYesterday at 8:06 pm by Cdw1966

» Introdution (Issued)
DIY aluminum antennas Icon_minitimeYesterday at 8:05 pm by GaryWilson

» Introduction and Call-sign Request (Issued)
DIY aluminum antennas Icon_minitimeYesterday at 8:02 pm by GaryWilson

» New member call sign please (Issued)
DIY aluminum antennas Icon_minitimeYesterday at 7:59 pm by GaryWilson

» and you think you have it bad ??
DIY aluminum antennas Icon_minitimeYesterday at 6:51 pm by SangueG

Keywords
lincoln 9900 Mckinley ss6900n ALINCO radio frequency midland bazooka anytone call power Calling display sign Sirio yaesu coax Mobile antenna list president SS6900 ss9900 6900 callsign
QRZ Database

 

 DIY aluminum antennas

Go down 
2 posters
AuthorMessage
karelgol
Contributor
Contributor
karelgol


Call Sign : 19-CT-024
Posts : 88
Times Thanked : 0
Join date : 2020-05-21
QTH or Location : Steenwijk, JO32bs
Equipment Used : Magnum 257HP,President Lincoln I, President Bill Asc, AMP-150, Imax-2000, Emperor LA-50
Age : 63

DIY aluminum antennas Empty
PostSubject: DIY aluminum antennas   DIY aluminum antennas Icon_minitimeTue Sep 08, 2020 4:34 pm

When building aluminum antennas, how do you connect the pieces? Any experience with those low temperature welding sticks with flux included? Suppose thats some kind of soldering.

73

Victor likes this post

Back to top Go down
View user profile
Victor
CT Directors
CT Directors
Victor


Call Sign : 26-CT-3228 Ham M7VIC
Posts : 2671
Times Thanked : 182
Join date : 2019-11-10
QTH or Location : Bedford
Equipment Used : Various

DIY aluminum antennas Empty
PostSubject: Re: DIY aluminum antennas   DIY aluminum antennas Icon_minitimeTue Sep 08, 2020 8:19 pm

Hi Karel,

I suppose it depends on what kind of antenna you're building and pieces you're connecting really.

Stainless steel fasteners are usually used for fixings subjected to weather conditions as they are more resistant. However they are galvanically incompatible with aluminium. (Look for bimetal reactions and the periodic table.) As such some antennas use plastic fixings to separate the aluminium from the stainless screws etc. There are less problems with stainless fixings on large areas of aluminium and hence why stainless clips can be used on aluminium tubes and small contact threaded sections. (Tap the aluminium to accept a stainless thread and use a washer at the head end.)

There are plenty of homebrew antennas out there on the internet to get some good ideas of fixing systems.


As for aluminium soldering I can only give you my personal experiences.
Basically, a royal pain in the backside! Wink

I had an aluminium heatsink from a radio restoration that had a broken fin and being an old radio a replacement was unavailable. Seeing as I had the fin I too thought about soldering and ordered some fluxed aluminium welding rods. I decided to try it out first on a different aluminium heatsink before repairing the original and glad I did. Would not solder for love nor money despite videos making it look easy!

The solution in the end was to heat the aluminium up first in a kitchen oven to 200'C before attempting the weld. Worked a treat! I did the same for the restoration piece and it worked out great.

But it'll be a little difficult to stick an antenna in the kitchen oven Wink

I suppose the secret is in heating the aluminium to temperature first but a bit difficult with a torch and large section.


So that said, I'd use stainless bolts and plastic washers myself.


Hope that helps.

All the best,
Victor
Back to top Go down
View user profile https://www.qrz.com/db/M7VIC
 
DIY aluminum antennas
Back to top 
Page 1 of 1

Permissions in this forum:You cannot reply to topics in this forum
Charlie Tango 11m DX Radio Group Forum :: Help and Discussion Forums :: Antenna Discussion-
Jump to: