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Old 01-29-2012, 11:22 AM   #1
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difference between ham and cb antenna?

I am looking to mount a 102" on my yj, but the ones that i am interested in usually are listed as ham, do i have to get a "cb" antenna or are they the same?

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Old 01-29-2012, 12:26 PM   #2
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An antenna is basically a piece of wire, but the length of antenna's are specific to the frequencies that you want to use them on, so yes since Amateur radio and CB's use different frequencies the antennas will be different.

A 10 meter ham band antenna (28-29.7 MHz) should work on CB radios (26.965-27.405 MHz), a 102" antenna is a 10 meter band antenna.

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Old 01-29-2012, 01:14 PM   #3
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thank you! good info to know.
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Old 01-29-2012, 01:34 PM   #4
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Those 102" whips are designed to be used with the 6" springs for CB frequencies, they will work on 10M without the springs OK.

Be aware that some groups don't allow these long antennas as they feel they they can get caught in branches and whips around and hurt people. The longer antenna is more efficient the the short fibreglass ones.
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Old 01-29-2012, 01:46 PM   #5
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Sparky, Is your avatar an antenna tuner circuit?
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Old 01-29-2012, 05:45 PM   #6
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Nope, two extra components in there.
Without those it could be.
Good guess, take another look.
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Old 01-29-2012, 06:30 PM   #7
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Second guess is a crystal radio, but I haven't seen one of those in about 35 years (since High School Electronics).
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Old 01-29-2012, 08:26 PM   #8
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Very good, you nailed it. I guess the coil taps, and variable cap pointed to the tuner.

Both circuits very simular and do the same job, frequency resonance.

Cyrstal rigs are still around, and have gotten sophisticated if you want them to be. I have been playing around with them a bit.

Take a look at MidnightScience. They also have a rather lively discussion forum Rap 'n Tap Discussion Group that is just as friendly as this one.

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