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Commercial Radio Antennas - Please keep discussion related to professional, commercially used antennas and antenna systems for the two-way radio industry. Topics for the use of these antennas on amateur bands are accepted here.

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Old 09-22-2017, 10:52 AM
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Default DB-224 question

I recently bought a dozen used DB224 antennas, all complete and all with very good cables and connectors. My question is how do you tell if they are A/B/D/or E?
I checked all of the specs I could fine and it seems the A&B are the same total length. Would there be a difference (measurable) in the element size?
Any input would be greatly appreciated.
Bob
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Old 09-22-2017, 3:54 PM
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Have you checked the on-line specs? Look for mechanical specifications to look for any difference in element length.

John
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Old 09-22-2017, 6:33 PM
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Default DB-224 Questions

I have downloaded all of the specs I could find and none of them stated they were mechanical specs. Thanks for the idea I will search for those tonight and see where I end up.
Thanks again
Bob
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Old 09-22-2017, 8:04 PM
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http://www.repeater-builder.com/ante...diagram-dz.pdf

Here is some info on the E model.
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Old 09-22-2017, 8:42 PM
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Default DB-224 Questions

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Originally Posted by rescue161 View Post
Now that is wonderful. I have searched and downloaded about a dozen different spec sheets and none have been anything like that one. But this one is an E model, would the measurements be somewhat similar for the B model? I am really not too well educated in these antennas.
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Bob
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Old 09-22-2017, 9:51 PM
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Given that these antennas are available in several models that cover different band splits, I would expect there to be some (perhaps subtle) differences in element size and spacing. Otherwise, why would there be different models?

John
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Old 09-22-2017, 10:04 PM
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Default DB-224 Questions

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Given that these antennas are available in several models that cover different band splits, I would expect there to be some (perhaps subtle) differences in element size and spacing. Otherwise, why would there be different models?

John
That was what I figured, I was trying to find out just what models I bought. Since I have several of the old system repeaters and half a dozen duplexers that are all marked with the operating frequency's, my best guess would be B models. I was just trying to confirm this thought.
Thanks for all of the help and information I have received from everyone here.
Bob
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Old 09-23-2017, 2:53 AM
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See page 2 of this pdf.

http://www.repeater-builder.com/ante...b-224-af5u.pdf
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Old 09-23-2017, 8:44 AM
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Default DB-224 Questions

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Now that was what I needed. Thanks so much. I spent several hours going through the repeaterbuilder antenna section and never found this one.
Thank you so much for your help.
Bob
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