JR Radio & Spektrum Radios Discuss all your JR and Spektrum gear.

Base loaded antenna

Reply

Old 01-27-2003, 04:56 PM
  #1  
Texas 3D
Senior Member
Thread Starter
My Feedback: (16)
 
Texas 3D's Avatar
 
Join Date: Feb 2002
Location: Houston, TX
Posts: 2,666
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Base loaded antenna

Hi Danny,
was thinking of buying the base loaded antenna from JR for my 8103 ! Question: Is there any reason I have to be worried about doing this ? Is it safe to use on SPCM and PPM ? Is there any advantage / disadvantage having a base loaded antenna ?
Thanks for your time and help
Texas 3D is offline  
Reply With Quote
Old 01-27-2003, 05:03 PM
  #2  
dsnyder
 
dsnyder's Avatar
 
Join Date: Jun 2002
Location: Champaign, IL
Posts: 9,365
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Base loaded antenna

There is no reason to be worried about it. It is absolutely safe for all modulations. The only disadvantage is that the module will get warmer than it will with a standard antenna fully extended. The module getting warmer will lead to the components losing their tuning over time, granted it will take quite some time before this becomes an issue. It is best to have the system checked out once a year if you fly often, regardless of the antenna you are using. If you do not fly that often, you would be fine for a couple years. As a side note, to use the base loaded antenna, you will need a base load antenna adapter for the 8103, that is part number JRPA156.
dsnyder is offline  
Reply With Quote
Old 01-29-2003, 06:03 AM
  #3  
Peter Khor
Senior Member
My Feedback: (4)
 
Join Date: Nov 2002
Location: Norman, OK
Posts: 554
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Base loaded antenna

Danny,

The RF pack getting warmer isn't a good sign :-( fwiw it usually means that there's an antenna mis-match, which means that there is a noticable drop in effective RF output (the rest "reflects" back to the RF moudle, and heat). Could you confirm that it actually does heat up the RF module?!?

fwiw I am using the Smiley Duck antenna on my 8103 with no heating (or from what I can tell).

Thanks,


Peter
Peter Khor is offline  
Reply With Quote
Old 01-29-2003, 01:40 PM
  #4  
dsnyder
 
dsnyder's Avatar
 
Join Date: Jun 2002
Location: Champaign, IL
Posts: 9,365
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Base loaded antenna

Actually they will get warm regardless of antenna used. If it gets hot then the system likely needs servicing, however if it is just warm, it is normal.
dsnyder is offline  
Reply With Quote

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


Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service