A relay could never switch at 76 MHz.
You could build a Class E amplifier out of an H bridge, I suppose, but you
would need additional components (large capacitors and inductors for
tuning).
Why bother when you have an actual radio in the form of the HackRF?
--Quentin
On Sun, 12 Jul 2015, Mitja kocjančič wrote:
what about H-Brigde or a Relay (could I amplifie a signal with it?) (I have
custom made H Bridge with chips and you can connect a power suply to it and
drive motors but I don't know if they can amplifie a signal with it (and
there is another problem that I can only transmitt in European FM Band with
Raspberry Pi (I would like to transmitt on 76 Mhz (because Japanese FM Band is
enpty here in Slovenia)
2015-07-12 19:54 GMT+02:00 Russell Handorf <rhand...@handorf.org>:
And filter your pi, it is a very nasty transmitter.
-------- Original message --------
From: Quentin Smith
Date:07/12/2015 1:40 PM (GMT-05:00)
To: Mitja kocjančič
Cc: hackrf-dev
Subject: Re: [Hackrf-dev] FM Repeater
There's nothing stopping you from transmitting FM+RDS with a HackRF,
except possibly someone hasn't written the software yet.
It sounds like what you really want is a power amplifier, though. Even the
HackRF will not be particularly strong (~10 mW at FM frequencies).
(Honestly, for the kind of power output you can get from an RPi, you might
want a preamplifier instead.)
--Quentin
On Sun, 12 Jul 2015, Mitja kocjančič wrote:
> Hi I am using Raspberry Pi to transmitt FM Radio on 87.8 Mhz but the
range is realy poor (I don't want to use HackRF for this because I can't change
RDS on air (with RPi (Raspberry Pi) I can change RDS via stdin
pipe)
>
> So I would like to recieve that station with RTL-SDR Dongle and then
retransmitt it with HackRF on 76 MHZ
>
> Anyone know how I can do that?
>
> Best regards and thanks for Anwsering
>
>
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