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You need volts or uv to generate the current that lags 90 degree behind it. Without voltage/potential difference to kickstart the current there is no current. Thats why i max lies 1/4 wave down the radiator from Vmax. If you looked at coax or basket as a 3 conductor line when cmc is present...

Avanti Av261 and Av241 are not the same in performance, both are excellent antennas and are what Sirio ml145/hp3000 and hp 4000 are basically clones off. That calculator looks interesting. Wonder what my many new boxed Hy Gain CLR2'S , 418 beta matched .25 gp's and 533 CB3 yagi along with my...

As for the Astroplane which i have a bnib one lying here, took me 3 decades to find but i found an original, i would doubt very much it is anything other than a starduster variation .25 wave ground plane with a reduced radiator to comply with fcc regulations. Like the Sigma i doubt very much the...

Firstly I am a firm believer the Sigma 4 / Vector 4000 is The second best cb vertical ever made for performance, only surpassed by the no longer made Ham International Big Mac. All 3 are notoriously fragile with the Avanti the strongest. How anyone can't see in the CST animation that the...

CB SHOP CHOP SHOP would be a good start. At the end of the day even the best techs have off days being human, so its all down to perception and preference and in both as my buddy Bob 85 has often quoted bullshit is 5 cents a gallon. The best way of all is to learn to do it yourself and if your...

I've only heard of them, Adams is a beautiful radio as standard, remember using the export version in 80's, think it was 80ch, back then in Glasgow with no internet was hard to source info on what was about elsewhere in Europe, a few Adams,Cobra 148 GTL DX, Stalker 1X with FM, Madison...

I've seen them on e bay too Henry, I have 2 Richards already, but want a mint boxed one, missed one in italy as guy wanted cheque, too dodgy, I'm patient, right ones will come up eventually. I'm quite fussy, they need to be totally unmodded except for export mod which is built in being...

The fantasy is all yours mate, enjoy the trip, I thought LSD was outdated, obviously not. lol

interesting one here with counter switches source : http://78roger.free.fr/president/adams.htm I'm not sure what all the fuss is about these hacked up radios, in my opinion I'd rather have an as new untouched one, they are classic radios and hacking them up is sacrilidge be it for 10m or ukfm...

you will find loads of adams vfo picsvids here https://www.google.co.uk/?gws_rd=ssl#q=president+adams+vfo from what i know most were done by Muller in Germany but may be a few done elsewhere as a few techs in late 80's early 90's had the capability, they definately weren't production line from...

For once I agree with you Doc, he does have a language problem , he talks fluent fucking shite !!!!

I think you should read up on the skin effect, at RF frequencies the RF only penetrates microns into the copper, therefore if not choked coax is a 3 conductor cable until you add enough impedance on the shield to minimise current flow on the outer skin to the point where it is almost a balanced...

yeah i'm not too bad Jeff, i know, i ain't seen a zeppelin for a while, i heard a rumour the luftwaffe gave up on them when someone told them avanti released the sigma 4, lmao 73 jazz sometimes its hard to see a forest because all the trees get in your way, llf

If coax cant radiate why is the T2LT such a good antenna, and why does a hot braid outer skin cause so much rfi and receive so much noise? Obviously because its part of the radiating system. I love this J pole crap, A T2LT is a coaxial only centrefed dipole, nothing added to radiate, yet it...

Yeah thanks Garth, I figured it out not long after I made that post and just before my BB browser crashed, lol, Once I switch to the Nokia in next couple of days hopefully will load faster and not conk out browser, although in fairness may not be the site, Blackberry has had a mind of its own...

I find my Blackberry don't like it, either crashes browser or takes ages to load, hit post reply and it quotes, couldn't get quote to work. Worst of all my Lion Rampant avatar has stopped fluttering, hope that's not a sign of things to come on Sept 18th when my country goes to the polls to rip...

2 points, Firstly achieving 3db gain is not as easy as it sounds, needs good ground and correct spacing conditions. Secondly you can't just use two equal lengths of 75 ohm coax, they must be exactly a 1/4 wave allowing for velocity factor or odd multiples of a 1/4 wave, ie 1/4, 3/4, 1 1/4, 1...

Try any 3 element beam with 5/8 wave a few feet above, best all round compromise and most cheap rotators will handle it, i ran a 3 ele and mighty magnum 3 on a 10ft pole to rotator strapped to chimney and 6 ft pole above rotator with beam halfway and magnum above at top, almost no noticeable...

I've used both Sirio Hy Power 4000 and Megawatt 4000 extensively since 1999, had several of both and a HP 3000 too, build quality is sufficient but not brilliant (its no av261), performance of both is exceptional for price, only thing cheaper and better is a 108 " whip, power handling quotes on...

If you don't know and don't ask, you will never know, no such thing as a stupid question, only stupid people who ridicule the question, generally with less knowledge than the person they are slagging off, as previous poster says, asking questions not only helps you, it may well help hundreds...