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RE: FM receiver modules?
To: "'CRTech'" <crtech@crtech.org>
Subject: RE: FM receiver modules?
From: "Bill Hurne" <billhurne@pilgrimradio.com>
Date: Mon, 2 Apr 2018 13:08:43 -0700
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Cute radio, but I don’t see a way for Willie to connect an analog signal strength meter to this or many others.

 

Most such radios have no easy place to tap in a meter.   Even simple analog radios.   Maybe Willie could look for something with an AGC circuit that could be tapped into, connect a meter to the AGC gain control voltage.   Many analog radio S-meters are tied into the receiver’s AGC circuit.

 

Bill

 

 

 

From: Kevin Trueblood [mailto:kevin@neptuneradio.net]
Sent: Monday, April 02, 2018 12:39 PM
To: CRTech
Subject: Re: [CRTech] FM receiver modules?

 

 

On Mon, Apr 2, 2018 at 3:37 PM, Scott Todd <stodd@kloveair1.com> wrote:

If there’s a way to make that thing decode analog AM stereo, I’d buy one today.

 

Scott Todd

 

From: Bill Hurne [mailto:billhurne@pilgrimradio.com]
Sent: Monday, April 02, 2018 12:02 PM
To: 'CRTech' <crtech@crtech.org>
Subject: RE: [CRTech] FM receiver modules?

 

This dongle and many others displays signal strength when connected to a cell phone running free apps.

 

https://www.amazon.com/RTL-SDR-Blog-RTL2832U-Software-Telescopic/dp/B011HVUEME/ref=sr_1_3?ie=UTF8&qid=1522688362&sr=8-3&keywords=rtl+sdr+dongle

 

Bill

 

From: Bill Hurne [mailto:billhurne@pilgrimradio.com]
Sent: Monday, April 02, 2018 9:50 AM
To: 'CRTech'
Subject: RE: [CRTech] FM receiver modules?

 

Not very basic, but this displays signal strength in dBuV.   Very nice for relative comparisons.  Also measures much else such as modulation, RDS sub level, pilot level, decodes RDS, etc.

 

http://pira.cz/fm_broadcast_analyzer/

 

Bill

 

From: Willie Barnett [mailto:wbradiolists@gmail.com]
Sent: Monday, April 02, 2018 9:40 AM
To: CRTech
Subject: [CRTech] FM receiver modules?

 

To the Braintrust:

Are you aware of any inexpensive, very basic, analog FM receiver modules? The goal is to come up with a simple "relative" field strength measuring device for fairly strong FM radio signals.

I've tinkered with a 2-transistor design with a single tank circuit front-end, that "kinda works", but I'd like something more selective, and a bit more sensitive.

Ideas? Links? :)

Meanwhile, a-Googling I will go. ;)

 

Willie...

 

References: RE: FM receiver modules?
("Bill Hurne" <billhurne@pilgrimradio.com>, 2 Apr 2018 17:01:46 -0000)
RE: FM receiver modules?
(Scott Todd <stodd@kloveair1.com>, 2 Apr 2018 19:37:57 -0000)
Re: FM receiver modules?
(Kevin Trueblood <kevin@neptuneradio.net>, 2 Apr 2018 19:39:23 -0000)
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