RadioReference on Facebook   RadioReference on Twitter   RadioReference Blog
 

Go Back   The RadioReference.com Forums > Topic Specific Forums > Antennas and Associated Hardware > Scanner / Receiver Antennas

Scanner / Receiver Antennas For discussion of any type of receiving antenna used by a scanner or receiver base, mobile or handheld.

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1 (permalink)  
Old 10-21-2013, 12:19 PM
Completely Banned for the Greater Good
  Premium Subscriber
Premium Subscriber
 
Join Date: Feb 2013
Location: Hicksville, Long Island, NY
Posts: 1,431
Default Any A/S MON Series experts out there…???

Hello! I have several old MON-Series mobile antennas (MONR33, MON-52 and MON-53). The instruction manuals that comes with them all show a #K-722 base coil. There are no specs for this coil, and there are no markings on any of the coils I have (except for the Antenna Specialists logo), but The Antenna Farm carries them, and their site shows them as:

“406-470MHz replacement coil for ASP7650 MOSAIC series antennas”

Under “MHz” it shows “406-470MHz”

I ALSO have an old A/S MON-58, which is basically the MON-52 whip with a base kit. HOWEVER, the instruction manual with the MON-58 shows a #K-222 coil, and the manual says “Marked 406-494MHz”, and the actual coil does have “406-494MHz” embossed in the top section of the plastic housing.

The upper whips for the MON-52 and the MON-58 are BOTH listed as #19-4645-1 in their respective manuals.


The MON-52 and the MON-58 are both rated for 25-1000MHz.


Now, here is my question:

If both antennas are rated for 25-1000MHz, and both antennas have the same exact main whip, then why would they have different base coils?????
Reply With Quote
Sponsored links
        
  #2 (permalink)  
Old 10-21-2013, 7:42 PM
Member
   
Join Date: Jun 2008
Location: tenn
Posts: 31
Default

does the black housing look like the standard k-722 ? or is the surface smooth ? i might be wrong, but i think the K-222 is an older model, and the K-722 is an updated model.
Reply With Quote
  #3 (permalink)  
Old 10-21-2013, 8:17 PM
Completely Banned for the Greater Good
  Premium Subscriber
Premium Subscriber
 
Join Date: Feb 2013
Location: Hicksville, Long Island, NY
Posts: 1,431
Default

The K222 I have has a metallic label around its upper perimeter, none on the K722.
The K222 is definitely smoother than the K722.

I still don't understand why they have different specs...

Maybe the specs in the actual A/S manual are accurate, and the specs on the Antenna Farm website are bogus (since he doesn't show a source for the data)?
Reply With Quote
  #4 (permalink)  
Old 10-21-2013, 8:45 PM
Member
   
Join Date: Jun 2008
Location: tenn
Posts: 31
Default

i'd go with the info from the A/S manual. what your describing sounds like the K-222 is an older model, and the K-722 is an update, i have one like the K-222 smooth surface and chrome strip you described. when you look inside the the bottom of the K-222 does it look like fiberglass, kinda white or lite yellow,or metal "like brass" ?

i have several base part numbers, and K-222 doesn't match any "strange"

Last edited by monitor51; 10-21-2013 at 9:00 PM..
Reply With Quote
  #5 (permalink)  
Old 10-21-2013, 10:12 PM
Completely Banned for the Greater Good
  Premium Subscriber
Premium Subscriber
 
Join Date: Feb 2013
Location: Hicksville, Long Island, NY
Posts: 1,431
Default

I'll check out the undersides of both bases tomorrow. Thanks for sticking with me on this!

The bottom line is, only the K-222 coil has data supported by A/S as seen in the MON-58 manual, where it says 406-494MHz. There is no A/S bandwidth data for the K-722, at least none that I can find. I'd love to know what the specs are...

I guess I can try swapping them out on one of my MON-52 whips and see which one gives me better coverage.
Reply With Quote
Sponsored links
  #6 (permalink)  
Old 10-21-2013, 10:34 PM
Member
   
Join Date: Jun 2008
Location: tenn
Posts: 31
Default

glad to help. i have some old paper work, with specs and model numbers, this info came from A/S Antenna Specailists Allen Group K-722 406mhz-470mhz, KT722 470mhz-512mhz, K-725 138mhz-174mhz, KH725 210mhz-230mhz.

i'd like to have the KT722, and the K-725

Last edited by monitor51; 10-21-2013 at 10:41 PM..
Reply With Quote
  #7 (permalink)  
Old 10-22-2013, 3:39 PM
Completely Banned for the Greater Good
  Premium Subscriber
Premium Subscriber
 
Join Date: Feb 2013
Location: Hicksville, Long Island, NY
Posts: 1,431
Default

Quote:
Originally Posted by monitor51 View Post
glad to help. i have some old paper work, with specs and model numbers, this info came from A/S Antenna Specialists Allen Group:

K-722 406mhz-470mhz
KT-722 470mhz-512mhz
K-725 138mhz-174mhz
KH-725 210mhz-230mhz

I'd like to have the KT-722, and the K-725.
Wow, thanks much! OK, I see that the bandwidth of the K-722 does indeed match what’s on The Antenna Farm’s website, so that’s good. Now I wonder why they use a different coil on the MON-58 than they do on the MON-52? Seems to me that they should be the same, since they both use the same main whip and the coverage is (was) advertised as being 25-1000MHz…I guess we’ll never know since A/S is long gone.
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 8:59 PM.


Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
All information here is Copyright 2012 by RadioReference.com LLC and Lindsay C. Blanton III.Ad Management by RedTyger
Copyright 2011 by RadioReference.com LLC Privacy Policy  |  Terms and Conditions