# Antenna help

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##### Member
Can anyone ID if these antennas are UHF or VFH? I'm guessing the shorter white one is UHF and the two metal ones are older VHF antennas. Am I right?

Thanks
John

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And these two.

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#### Ubbe

##### Member
You are correct. Top one is 1/4 wave GP and the metal bottom one are 1/2 wave dipoles. You can easily calculate their frequencies in MHz by dividing 300 by their lenght in meters. That top one seems to be 0,5 meters measured from to the top of the bend and as it is a 1/4 wavelenght it is 300/0,5=600 and 1/4 of that are 150Mhz.

Bottom one seems to me 1 meter in total element lenght and are 1/2 wavelenghts dipoles and are 300/1=300 and half wave are 150MHz.

Measure their exact lenght to get the exact frequencies.

The white pole have probably some coils inside it that makes it a stacked dipole but impossible to know the frequency. Normally the frequency will be stamped on a label on the antenna.

/Ubbe