K40

[mr p!e]

Is this worth the money or can anyone recommend an alternative?

[stampman]

noo and wilson 100 or sirio 4000

[Road_Hog]

noo and wilson 100 or sirio 4000

Just looked at the price on the Thunderpole website, that Wilson is a mighty expensive antenna for a mobile whip with integrated magmount.

[porky.69]

BUY CHEAP ...BUY TWICE

[mpcapri]

This was the mobile aerial to have in the 80’s, always wanted a K40 as a kid and said one day I’ll own one.
20 years on and now own one (also wanted a Rolls Royce as a kid but that’ll have to wait until next year )

Purchased from Thunderpole




Unfortunately can’t tell you how good or bad it performs because I have never tried it, the cement mixer does not make a very good ground-plain
Mart

[porky.69]

yes the k40 antenna was all the rage when i started cb radio too and even now they still hold there price

[Haggis]

I've had three K40;s and broke them all .....but I did abuse them offroading.

Must say tho, that they had fantastic range, and I liked the fact that you could unscrew the antenna from the magmount (for security).

[disgwylfa]

Way back in "De Olden Daze" (pre CB 27/81) I used to have a K40 and mag mount and I too liked the " unscrew the antenna from the magmount (for security) " feature. . . . right up until some toe-rag cut the cable and nicked the mag mount.

After that was replaced It was always a case of remembering to put the mag mount in the boot whenever parked.

I use a mag mount now, and still do the in-the-boot bit whenever parked so the lesson lasted a long time.

[stampman]

k 40 very dependent on length of coax atached as well

[Road_Hog]

k 40 very dependent on length of coax atached as well

What makes you say that. Surely the coax shouldn't make any difference.

[stampman]

in the k40 i have had a lot of trouble in the past getting the swr right if the cable has been shortened puts the swr well out where as all other antenna you can swr on 12" or wired with no problem

[Road_Hog]

in the k40 i have had a lot of trouble in the past getting the swr right if the cable has been shortened puts the swr well out where as all other antenna you can swr on 12" or wired with no problem

Changing the coax shouldn't adjust the swr, this must just be fooling the meter?

[stampman]

i believe the meter and dont believe gordon brrown

[hotmetal1000]

coax lenght can change swr readings normally only ever so slightly. If the swr is going out big time with differant coax lenghts than I would say the K40 has some other design problem.

[stampman]

correct