Antenna Question

sheonb · Post by **sheonb** » Sun Mar 28, 2004 7:23 pm

I am pretty new to the radio world. I have a gm300 and I connected it to a roof mount antenna, the only thing is its hanging outside of my window and not connected to any metal. By not connecting it to metal do I lose reception?

KG6EAQ · Post by **KG6EAQ** » Sun Mar 28, 2004 7:29 pm

Do you mean an automotive roof magnetic mount? Or a base style antenna? If it's a magmount with no metal underneath you will not have a ground... BAD!

sheonb · Post by **sheonb** » Wed Mar 31, 2004 9:42 am

Actually its just a plain roof mount antenna. It is not a magmount. It is the one you are supposed to drill a hole for.

RESCUE161 · Post by **RESCUE161** » Wed Mar 31, 2004 10:34 am

You are FRYING your radio if you're transmitting!

I hope you're not transmitting on it without the antenna grounded. That is a sure fire way to have an out of whack SWR and a burned up PA.

Either get a magnet mount antenna or dril a hole and mount the antenna properly.

sheonb · Post by **sheonb** » Wed Mar 31, 2004 1:01 pm

That is a BIG 10-4. I have transmit on it for less than 1 min. I hope that doesnt mess it up to bad. I will return this antenna and get a magmount. Thanks

Will · Post by **Will** » Mon Apr 05, 2004 1:11 am

Remember you STILL need a groundplane equal to 1/2 wave diamiter to put your "mag mount" on, that is 15 in dia for UHF minimum. 36 for VHF.