Hello and welcome,

Decibel Products Manufactures very high quality UHF Two-Way Radio Antennas. Models include the DB-404, DB-408 & DB-411 Dipole Arrays. Model suffix letters A, B; C; D & E indicate the "band segments" where the antenna operates. A=406-420, B=450-470, C=470-488. D=488-512 & E=482-494 MHz for standard UHF Antennas.

This is the description page for the above-mentioned Decibel Antenna dipole array drawings available on the main www.radiowrench.com/sonic web page. These are just hand drawn rough notes with some dimensions and indicated measurements, which might prove useful if you are restoring or converting a surplus Decibel Antenna. Actual data sheets for these antennas can still be found at the many Decibel Products (now part of Andrew) Dealer/vendor web sites.

Please use this information at your own risk. Drop us an Email if you notice a value out of spec or you have additional information to share. Some additional scans of the various DB Antenna Mounts, Antenna Alignment and hardware information are also listed for free download.

Enjoy the articles available in Adobe PDF format. Below are some pictures of the various antennas by model number.

Above: The Decibel DB-404-B 450-470 MHz Dipole Array Antenna

Above: The Decibel DB-408-B 450-470 MHz Dipole Array Antenna

Above: The Decibel DB-411-B 450-470 MHz Dipole Array Antenna

Enjoy and good luck...
Skipp

We/I get a lot of Email from visitors who drop into these file down load description pages via a web search "engine" (like Google). Vistors are not able to locate the file download icon for that specific description page. There is a simple way to find the file download icons on the main http://www.radiowrench.com/sonic sonic web page...

First and best: Use the menu icon just below to the main sonic page.

Second: Back space out the page your now looking at in your browser location line. As an example, using the http://www.radiowrench.com/sonic/so2004.html description page. Remove the last portion of the web location with the keyboard back space key to read http://www.radiowrench.com/sonic then press your Enter Key to reload the main sonic page "just in front" which would probably has the information you're looking for. This works on most of the current browsers at most web sites.

Third: You can always contact me using the Email Icon below. I'll try to get a back to you asap with a practical answer.

Enjoy, come back when you can...