SOTA 2m/70cm telescopic Dipole Antenna Pt1
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- čas přidán 10. 09. 2024
- My hand held 1/2 wave Dipole made mostly from parts found in the scrap bin/Junk box at work. When tested on my Analyzer It achieves resonance @ 50 ohms with a " flat 1.0 swr" on VHF and UHF just by tuning the whips to suit.. Its performance sings, showing great results, amazing for something you could put in a large pocket.. Check out parts 2 and 3
If you like making antenna's.. check my QRZ
www.qrz.com/db/...
73
Mark
2e0vov
Brilliant idea.I'm a SWL and build most of my kit especially antennas. Quite by coincidence I'm also in Poole.
I am having so many good ideas!
Thanks for the vid !
plans for dipole sizes can be found on google. my telescopic whips are from eBay and are 51 cm long. just longer than required.
I used 15mm standoff pillars, bonded into the handle which is filled with resin to hold them and the coax snug.
friend you have plans on how to do this dipole?It is that I find few laps measures and must give the coaxial cable! I hope you help me to make this dipole antenna ...
but what about swr measurement for this dipole in different freq …..?
Its very broadband so works all the band well
What size brass nuts did you use thnks in advance
73
M6TUI
Brilliant. Does the fact that it has telescopic elements in any way effect performance ?
Not at all
nice video, can this antenna handle a 15watt 50ohm fm 78~109mhz tx??
Thanks for the great video/tutorial !
Did you use a T-connector to connect the whips together? if so .. where can i buy one?
This is great stuff, do it for 11m and i will be well happy!!
LOL.. ill let u deal with 11m
Hi what size were the brass nuts
Hi, were they just normal brass nuts you used or something different? If so what did you use please.
Bobby Gooner I used brass nuts soldered to the coax inside. Just order the size to suit your antennas and u will be fine
Bobby Gooner in fact I made a revised version for a friend and used brass stand off pillars on that one
mk1tina I've ordered the same pair of antennas as you from fleabay. Can you remember if the stand off pillars were M3 or M4?
Bobby Gooner I think they were 3mm.. it was 5 years ago
I am a retired electrician lol, so I know all about 25ml pvc conduit and fittings. I am sort of copying your antenna here, but not sure about the choke. Is it just a separate piece of co- axial cable wound round or is it the feed line co-axial wound round? Sorry if I sound a bit dim.
feeder wound round conduit
+mk1tina Thanks very much for the reply. - I will do that. - Frank.
I made a version of this - It works Great!
well done Frank :-)
+mk1tina I made a contact 20 miles away just radio to radio and it is very good on airband. It works better vertically.
+frank curry well done
I wish they would just make and sell these so I know it was built to spec.. If I built one myself I would have no way of testing it.
All u need is a swr meter