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Article #2779

Re: 46/49Mhz Cordless Phone Amp Needed

#2779
From: Bill Squire
Date: Sun, 12 Apr 1992 21:55
19 lines
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els@hpd.unp.ac.za (Leonard Els @ University of Natal (Pietermaritzburg)) once wrote....
>
>Has anyone come across a 50Mhz RF Amp Schematic (about 5-10W Power output).
>I intend amplifying the signal from both my base station and handset of my 
>cordless phone. The handset will be used in a car, so there is no problem 
>for the power input.
>
>I do have the resources to DESIGN one myself, but this involves a lot of 
>work determining the correct values for coils etc.
>
>I someone has a design, could they get in contact with me.

I've found that the diplexer on a cordless phone will not allow much more
than 100mW.  More than that and you just desensitize the receiver, often
more than the increase buys you!  Using the 100mW at each end with a full
quarter wave antenna at the base may get you about a kilometer of range,
but expect no more no matter what you do.

                                                        Bill
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Message-ID: <229-PCNews-120beta@hacktic.nl>
Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!sun4nl!ooc.uva.nl!hacktic!bill
References: <els.43@hpd.unp.ac.za>

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Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!sun4nl!ooc.uva.nl!hacktic!bill
From: bill@hacktic.nl (Bill Squire)
Newsgroups: sci.electronics
Subject: Re: 46/49Mhz Cordless Phone Amp Needed
Message-ID: <229-PCNews-120beta@hacktic.nl>
Date: 12 Apr 92 21:55:58 GMT
References: <els.43@hpd.unp.ac.za>
Lines: 19