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Long wire question

Singularity35

DU7DVE
Jan 16, 2014
425
90
138
Small City, Philippines
I'm needing some input again guys. I am building a go box basically just for field operations and not so much as a prepper and I got an MFJ16010 long wire tuner. What's the best way to set this up?

From my research, some people say I don't need a counterpoise and some say I do.

Which is which?

Thanks in advance.
 

From my past experience you need at least 1/4 wave counterpoise connected to the ground on tuner, I was using a MFJ-969. If you don't you will get some RF burn, even as low as 100 Watts. But if you don't have an amp it might be ok.
 
True, but I also consider the guidance of the more experienced hams as invaluable. :)

not to be "picky", but,..... it's not a long wire tuner,........... it's a random wire tuner (there is a difference).

if possible, stay away from wl/2 lenghts.

here is a good read on wire lengths to AVOID, depending on the bands you want to work.
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=24&cad=rja&uact=8&ved=0ahUKEwiB15bpz5zSAhVk_4MKHZxHDWE4FBAWCCowAw&url=http://www.hamuniverse.com/randomwireantennalengths.html&usg=AFQjCNFsid4Qn_IMvw8jXeJTgG744NZbrw
 
not to be "picky", but,..... it's not a long wire tuner,........... it's a random wire tuner (there is a difference).

if possible, stay away from wl/2 lenghts.

here is a good read on wire lengths to AVOID, depending on the bands you want to work.
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=24&cad=rja&uact=8&ved=0ahUKEwiB15bpz5zSAhVk_4MKHZxHDWE4FBAWCCowAw&url=http://www.hamuniverse.com/randomwireantennalengths.html&usg=AFQjCNFsid4Qn_IMvw8jXeJTgG744NZbrw

Thanks, I do like to be accurate with terminology.
 
Thanks, I do like to be accurate with terminology.

no problem,.... my real point was about the effect on the tuner when the freq is changed.

the same wire may be just a fraction of a wl on the low bands ( a random wire), and multiple wls long on the higher bands ( a long wire)
 
For field operations? Seems cumbersome to me. Maybe you have a good way to wrap/transport?

73,
Brett

Planning to get something like this case and put radio, tuner, power source in. Might be able to fit a coil of magnetic wire in too. Besides I'm probably not going to wander too far from the vehicle. :D

21726_9.jpg


no problem,.... my real point was about the effect on the tuner when the freq is changed.

the same wire may be just a fraction of a wl on the low bands ( a random wire), and multiple wls long on the higher bands ( a long wire)

Hhhmmm good to know. Thanks. :)
 
Thanks for the feedback so far but I'm gonna have to ask more questions.

How long should my counterpoise be if I have a 58 foot random wire that I'll use on 40m? Hehe yeah, technically it would no longer be a "random" wire if I have a specific length.

If I need a ground rod, how do I implement that?
 
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