Cheap and available AM receiver chip?

[Tilmann Reh]

Hello,

I am looking for a cheap and easy-to-use AM receiver chip like the
SA614A, but for slightly higher frequencies (carrier up to 50 MHz).

Any suggestions/recommendations?

Tilmann

--
http://www.autometer.de - Elektronik nach Maß.

 

On Jun 16, 5:23 am, Tilmann Reh <tilmann...@despammed.com> wrote:

I am looking for a cheap and easy-to-use AM receiver chip like the
SA614A, but for slightly higher frequencies (carrier up to 50 MHz).

DXing for the masses? Melexis' TH7122 transceiver chip is fairly easy
to use, and Future shows it as $3.33 in 1pc qty.

At these frequencies, it shouldn't be impossible to build a discrete
solution, surely?

 

[Tilmann Reh]

zwsdotcom@gmail.com schrieb:

On Jun 16, 5:23 am, Tilmann Reh <tilmann...@despammed.com> wrote:

I am looking for a cheap and easy-to-use AM receiver chip like the
SA614A, but for slightly higher frequencies (carrier up to 50 MHz).

DXing for the masses? Melexis' TH7122 transceiver chip is fairly easy
to use, and Future shows it as $3.33 in 1pc qty.

No, it's not DX. And the TH7122 supports only FM/FSK/ASK, not AM.

At these frequencies, it shouldn't be impossible to build a discrete
solution, surely?

Principally yes, but at more circuit (and development) expense. Some
ready-to-use and simple standard circuit would be appreciated.

Tilmann

--
http://www.autometer.de - Elektronik nach Maß.

 

On Jun 18, 3:34 am, Tilmann Reh <tilmann...@despammed.com> wrote:

to use, and Future shows it as $3.33 in 1pc qty.

No, it's not DX. And the TH7122 supports only FM/FSK/ASK, not AM.

Hmm? Since the chip has an analog RSSI out, and the IF bandwidth is
set externally, what's the problem with using this part? We use it in
"AM" applications. Not at that low frequency, of course.

 

[Tilmann Reh]

zwsdotcom@gmail.com schrieb:

On Jun 18, 3:34 am, Tilmann Reh <tilmann...@despammed.com> wrote:

to use, and Future shows it as $3.33 in 1pc qty.

No, it's not DX. And the TH7122 supports only FM/FSK/ASK, not AM.

Hmm? Since the chip has an analog RSSI out, and the IF bandwidth is
set externally, what's the problem with using this part? We use it in
"AM" applications. Not at that low frequency, of course.

OK, I will have a deeper look at the datasheet. Maybe the headlines are
just misleading...

Tilmann

--
http://www.autometer.de - Elektronik nach Maß.

 

On Jun 18, 6:15 am, Tilmann Reh <tilmann...@despammed.com> wrote:

No, it's not DX. And the TH7122 supports only FM/FSK/ASK, not

OK, I will have a deeper look at the datasheet. Maybe the headlines are
just misleading...

Heh. There are parts from Infineon that do ASK, and yet the datasheet
says "FSK chip, for ASK applications see xyz".

 

[RST Engineering (jw)]

Google on "RSSI" and "receiver" and you'll find a couple of dozen devices
that will do your job. You do understand RSSI, yes? And a good AGC loop
that will keep the RSSI in the middle of it's curve?

Jim

--
"Dream as if you'll live forever. Live as if you'll die today."
--James Dean
<zwsdotcom@gmail.com> wrote in message
news:1182018922.122200.39250@c77g2000hse.googlegroups.com...

On Jun 16, 5:23 am, Tilmann Reh <tilmann...@despammed.com> wrote:

I am looking for a cheap and easy-to-use AM receiver chip like the
SA614A, but for slightly higher frequencies (carrier up to 50 MHz).

DXing for the masses? Melexis' TH7122 transceiver chip is fairly easy
to use, and Future shows it as $3.33 in 1pc qty.

At these frequencies, it shouldn't be impossible to build a discrete
solution, surely?