Home Menu

Menu


RadioBanter » rec.radio.amateur » Homebrew > How to reduce two-way radio's power output?
 
 
LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #5   Report Post  
Old May 13th 07, 04:00 PM posted to rec.radio.amateur.homebrew
external usenet poster
  
First recorded activity by RadioBanter: Jul 2006
Posts: 250
Default How to reduce two-way radio's power output?
wrote:
Nowadays two-way radios are getting more and more powerful, coverage
up to 8, 10 12 or more miles. Ironically, it is even harder to buy one
with only 2-mile distance.

I want to use a two radio just for short distance, for example, only
within 1000 feet. How to modify the circuit (generally speaking) so I
can extend the radio's powerful consumption? As I do not need it to
communicate for longer distance, I want it to reduce power output, so
I can use it for longer time. I know it is difficult to illustrate
without a schematics, but just in general terms, what kind of options
or in what areas can I do the modification?

One of my applications is to use 2-way radio as baby monitor for
longer distance than normal baby monitor does.
================================
Assuming that you talk about licence free handheld radios eg FRS in the
USA or PMR446 in Europe ,500 milli Watt with a fixed (rubber duck)
antenna , you can locate the radio (partly) inside a plastic or carton
cylinder which is covered with baking foil (also at one end)

The more the antenna is surrounded by the cylinder ,hence baking foil ,
the weaker the radiated signal . You then can adjust the cylinder such
that a acceptable signal is received at the other location.

Frank GM0CSZ / KN6WH
Reply With QuoteReply With Quote
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes
Threaded Mode Threaded Mode

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Yaesu FT-840 - Reduce Minimum Power electro Equipment 0 November 26th 06 07:28 PM
SWR VS Power Output lkokot General 2 February 9th 06 07:12 AM
FS: High Power 10M radio's, no licence required!! Hams are Gay CB 5 December 6th 04 11:27 PM
Help with TS-930S Power Output tim english Swap 2 July 27th 03 04:31 PM


All times are GMT +1. The time now is 11:10 AM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Contact Us RadioBanter forum home Privacy Statement
Copyright © 2017