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#1
July 16th 03, 05:27 PM
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Reccomend an FM receiver chip for 33cm or for 70 cm Rx.
Can anyone reccomend a good small surface mount FM receiver chip that is currently availible?
Is it possible to do FM reception with a Direct conversion RX and some simple DSP? Paul (Kl7JG) |
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#2
July 16th 03, 10:39 PM
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wrote in message ... Can anyone reccomend a good small surface mount FM receiver chip that is currently availible? Is it possible to do FM reception with a Direct conversion RX and some simple DSP? You can convert directly down to I and Q baseband with two mixers and a quadrature oscillator, then demodulate the baseband signals with a DSP. 73 Leon -- Leon Heller, G1HSM http://www.geocities.com/leon_heller |
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#3
July 16th 03, 10:39 PM
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wrote in message ... Can anyone reccomend a good small surface mount FM receiver chip that is currently availible? Is it possible to do FM reception with a Direct conversion RX and some simple DSP? You can convert directly down to I and Q baseband with two mixers and a quadrature oscillator, then demodulate the baseband signals with a DSP. 73 Leon -- Leon Heller, G1HSM http://www.geocities.com/leon_heller |
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#4
July 17th 03, 04:50 PM
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The Analog Devices AD607 would do the trick.........it is an I.F. subsystem
that has I and Q outputs. There isn't much support from Analog Devices on this one, so you would be breaking new frontiers. Pete Leon Heller wrote in message ... wrote in message ... Can anyone reccomend a good small surface mount FM receiver chip that is currently availible? Is it possible to do FM reception with a Direct conversion RX and some simple DSP? You can convert directly down to I and Q baseband with two mixers and a quadrature oscillator, then demodulate the baseband signals with a DSP. 73 Leon -- Leon Heller, G1HSM http://www.geocities.com/leon_heller |
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#5
July 17th 03, 04:50 PM
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The Analog Devices AD607 would do the trick.........it is an I.F. subsystem
that has I and Q outputs. There isn't much support from Analog Devices on this one, so you would be breaking new frontiers. Pete Leon Heller wrote in message ... wrote in message ... Can anyone reccomend a good small surface mount FM receiver chip that is currently availible? Is it possible to do FM reception with a Direct conversion RX and some simple DSP? You can convert directly down to I and Q baseband with two mixers and a quadrature oscillator, then demodulate the baseband signals with a DSP. 73 Leon -- Leon Heller, G1HSM http://www.geocities.com/leon_heller |
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#6
July 22nd 03, 12:45 AM
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In article ,
says... Can anyone reccomend a good small surface mount FM receiver chip that is currently availible? Is it possible to do FM reception with a Direct conversion RX and some simple DSP? Paul (Kl7JG) I really like the Philips SA604AD (http://www- us.semiconductors.philips.com/pip/SA604AD.html). It's easy to use, it's got plenty of internal gain, and it works well at a variety of IFs, from 455 kHz to 10.7 or 21.4 MHz. I've built several decent-performing receiver sections for NBFM audio, NBFM FSK data, and WBFM (broadcast) audio with the SA604 and various filters available from Digi-Key. Naturally, everybody that sells them appears to be out of stock right now. -- jm ------------------------------------------------------ http://www.qsl.net/ke5fx Note: My E-mail address has been altered to avoid spam ------------------------------------------------------ |
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#7
July 22nd 03, 12:45 AM
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In article ,
says... Can anyone reccomend a good small surface mount FM receiver chip that is currently availible? Is it possible to do FM reception with a Direct conversion RX and some simple DSP? Paul (Kl7JG) I really like the Philips SA604AD (http://www- us.semiconductors.philips.com/pip/SA604AD.html). It's easy to use, it's got plenty of internal gain, and it works well at a variety of IFs, from 455 kHz to 10.7 or 21.4 MHz. I've built several decent-performing receiver sections for NBFM audio, NBFM FSK data, and WBFM (broadcast) audio with the SA604 and various filters available from Digi-Key. Naturally, everybody that sells them appears to be out of stock right now. -- jm ------------------------------------------------------ http://www.qsl.net/ke5fx Note: My E-mail address has been altered to avoid spam ------------------------------------------------------ |
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#8
July 22nd 03, 07:10 AM
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"John Miles" wrote in message
... In article , says... Can anyone reccomend a good small surface mount FM receiver chip that is currently availible? Is it possible to do FM reception with a Direct conversion RX and some simple DSP? Paul (Kl7JG) I really like the Philips SA604AD (http://www- us.semiconductors.philips.com/pip/SA604AD.html). It's easy to use, it's got plenty of internal gain, and it works well at a variety of IFs, from 455 kHz to 10.7 or 21.4 MHz. I've built several decent-performing receiver sections for NBFM audio, NBFM FSK data, and WBFM (broadcast) audio with the SA604 and various filters available from Digi-Key. Naturally, everybody that sells them appears to be out of stock right now. I'm pretty sure Philips has discontinued that part. |
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#9
July 22nd 03, 07:10 AM
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"John Miles" wrote in message
... In article , says... Can anyone reccomend a good small surface mount FM receiver chip that is currently availible? Is it possible to do FM reception with a Direct conversion RX and some simple DSP? Paul (Kl7JG) I really like the Philips SA604AD (http://www- us.semiconductors.philips.com/pip/SA604AD.html). It's easy to use, it's got plenty of internal gain, and it works well at a variety of IFs, from 455 kHz to 10.7 or 21.4 MHz. I've built several decent-performing receiver sections for NBFM audio, NBFM FSK data, and WBFM (broadcast) audio with the SA604 and various filters available from Digi-Key. Naturally, everybody that sells them appears to be out of stock right now. I'm pretty sure Philips has discontinued that part. |
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#10
July 22nd 03, 10:42 AM
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"John R. Strohm" wrote in message
I really like the Philips SA604AD I'm pretty sure Philips has discontinued that part. No, it's in production. If difficult to obtain, find similar products he http://www.semiconductors.philips.co...r/SA604AD.html Markus HB9BRJ / AE6MG |
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