Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net

donate to eham
   Home   Help Search  
Pages: [1]   Go Down
  Print  
Author Topic: Comet SS660SB Dual Band Antenna  (Read 7522 times)
AB9TX
Member

Posts: 51




Ignore
« on: December 09, 2015, 06:53:10 PM »

Just installed a new fm mobile in the car, and using the same antenna mount I use for HF, the radio is deaf as a post with the Comet. Using the screwdriver antenna I can hear a repeater 120 miles away, although it has a 1K erp.

Has anyone taken one of these antennas apart? It was rather expensive- It is no longer under warranty as I purchased it new while visiting AES in Milwaukee a while ago.

I do not have an analyzer, but a basic ohm check measures open.
Should I just toss it, or does someone have any experience repairing one of these?

Thanks in advance..

Earl
AB9TX
« Last Edit: December 09, 2015, 08:16:59 PM by AB9TX » Logged
K0BG
Member

Posts: 10248


WWW

Ignore
« Reply #1 on: December 10, 2015, 10:30:17 AM »

Where did you measure the resistance? It could be a bad coax or connector, or even the mount.
Logged

AB9TX
Member

Posts: 51




Ignore
« Reply #2 on: December 12, 2015, 08:36:32 PM »

Alan, decided to dissect the antenna, it is junk anyways.

The top section with trap is ok. The bottom section is wired backwards, probably a manufacturing defect. The center threaded insert for the whip is shorted to ground. It measures open across the pl259 connector. Zero inductance, and around 2.5pf capacitance. From what I can tell there should be a coil with a cap in parallel in the base section. I was unable open up the base, special spanner tool needed,also it was potted.
Brand new, never used antenna. I think I will keep it, as the cat seems to like it being springy, hi.

Glad I didn't biff my new rig....

« Last Edit: December 12, 2015, 08:45:20 PM by AB9TX » Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!