WB4KFO Posted October 15, 2019 Share Posted October 15, 2019 Hello all. I have several mobile antennas bought at flea markets and thrift stores and I don't know what frequency they work for. One is a classic old Antenna Specialists mobile whip with a long grey base and a magnet mount that has a thrift store price but no markings. It could be CB or 152-174 mhz. Thanks for any help. Link to comment Share on other sites More sharing options...
Administrator K3MRI Posted October 15, 2019 Administrator Share Posted October 15, 2019 Hey Bill, antenna analyzer!! Bring the antennas to the next K4US meeting and I'll bring my analyzer. Just try to remind me beforehand. 1 Link to comment Share on other sites More sharing options...
WB4KFO Posted October 16, 2019 Content Author Share Posted October 16, 2019 Thanks Jim. I don't go to club meetings. Would the breakfast at Primo's be ok? 1 Link to comment Share on other sites More sharing options...
Administrator K3MRI Posted October 16, 2019 Administrator Share Posted October 16, 2019 36 minutes ago, WB4KFO said: Thanks Jim. I don't go to club meetings. Would the breakfast at Primo's be ok? Ooops, that's what I meant, breakfast 🙄 Duh. Yes, I'll bring my analyzer and adapters in case you have different connectors. Now, here's hoping I don't forget!!! Link to comment Share on other sites More sharing options...
N3IXY Posted November 8, 2019 Share Posted November 8, 2019 A 5/8 wave 2m whip will look similar in length to a 11m mobile whip, though the 11m whip will have a loading coil in the base. The coil may be visible if the base can be disassembled a bit. Do you have a SWR meter? That would provide some indication as to where the antenna is resonant. Also, you can also do some brief A/B testing between a known resonant antenna and the unknown, and see how well your signal propagates. (Receive characteristics won't necessarily be sufficiently different to form a judgement of an unknown.) 3 Link to comment Share on other sites More sharing options...
WB4KFO Posted November 16, 2019 Content Author Share Posted November 16, 2019 On 11/8/2019 at 10:47 AM, N3IXY said: Thanks Peter. That was very helpful. The antenna specialists usually provided a coil hidden in the base. If I remember correctly, it was not hard to pry it off unless it was glued to prevent moisture. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now