Re: AM radio that use a chip for the receive circuitry
Tom Crosbie G6PZZ <tom@...>
Thanks Peter,
I've had a quick read of the AN400 document and couldn't see an external varicap listed on the BOM's. I'm guessing the varicap might well be on-board the chip, which may be another reason for a decline in production, leading to a possible shortage. Of course it might just be a rumour.
Tom G6PZZ
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I've had a quick read of the AN400 document and couldn't see an external varicap listed on the BOM's. I'm guessing the varicap might well be on-board the chip, which may be another reason for a decline in production, leading to a possible shortage. Of course it might just be a rumour.
Tom G6PZZ
-----Original Message-----
From: main@UltralightDX.groups.io <main@UltralightDX.groups.io> On Behalf Of Peter Laws
Sent: 07 April 2020 16:03
To: main@ultralightdx.groups.io
Subject: Re: [UltralightDX] AM radio that use a chip for the receive circuitry
On Tue, Apr 7, 2020 at 8:08 AM lamontcranston17 <nojunk@...> wrote:
Everything is done by the chip. Your only job is to tell the chip what you want.
https://www.silabs.com/documents/public/application-notes/AN400.pdf
https://www.silabs.com/documents/public/application-notes/AN332.pdf
--
Peter Laws | N5UWY | plaws plaws net | Travel by Train!
From: main@UltralightDX.groups.io <main@UltralightDX.groups.io> On Behalf Of Peter Laws
Sent: 07 April 2020 16:03
To: main@ultralightdx.groups.io
Subject: Re: [UltralightDX] AM radio that use a chip for the receive circuitry
On Tue, Apr 7, 2020 at 8:08 AM lamontcranston17 <nojunk@...> wrote:
The radio is on a chip. You put power in, RF in, get audio out.
Maybe I need to refine my question a bit. The discuss was about if a
radio is designed today, will it incorporate a receive chip.
It all started with someone saying Varicap availability is
dwindling, (especially large sizes) and it was because of lack of
demand in AM radio because of receive chips.
Everything is done by the chip. Your only job is to tell the chip what you want.
https://www.silabs.com/documents/public/application-notes/AN400.pdf
https://www.silabs.com/documents/public/application-notes/AN332.pdf
--
Peter Laws | N5UWY | plaws plaws net | Travel by Train!