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#11
May 25th 04, 06:23 PM
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"John" wrote in message
... Does anyone know of a multimode detector IC that will handle SSB, AM and FM? Looking at an old ARRL handbook I can see LM373. Is there a more modern chip? You can do all those modes with a DSP. 8-) Leon -- Leon Heller, G1HSM http://www.geocities.com/leon_heller |
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#12
May 28th 04, 07:39 AM
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Behold, Leon Heller signalled from keyed 4-1000A filament:
"John" wrote in message ... Does anyone know of a multimode detector IC that will handle SSB, AM and FM? Looking at an old ARRL handbook I can see LM373. Is there a more modern chip? You can do all those modes with a DSP. 8-) Leon How many 12AU7's do I need to make that? ;-p -- Gregg *It's probably useful, even if it can't be SPICE'd* http://geek.scorpiorising.ca |
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#13
May 28th 04, 07:39 AM
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Behold, Leon Heller signalled from keyed 4-1000A filament:
"John" wrote in message ... Does anyone know of a multimode detector IC that will handle SSB, AM and FM? Looking at an old ARRL handbook I can see LM373. Is there a more modern chip? You can do all those modes with a DSP. 8-) Leon How many 12AU7's do I need to make that? ;-p -- Gregg *It's probably useful, even if it can't be SPICE'd* http://geek.scorpiorising.ca |
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#14
May 28th 04, 08:01 AM
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Gregg ) writes:
Behold, Leon Heller signalled from keyed 4-1000A filament: "John" wrote in message ... Does anyone know of a multimode detector IC that will handle SSB, AM and FM? Looking at an old ARRL handbook I can see LM373. Is there a more modern chip? You can do all those modes with a DSP. 8-) Leon How many 12AU7's do I need to make that? ;-p Well, you wouldn't be using 12AU7's. At the very least, you'd be using Compactrons to get maximum tube count per envelope. But likely, Nuvistors or sub-miniature tubes would be the only way to do it, if it could be done, since they are so much smaller. Michael VE2BVW |
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#15
May 28th 04, 08:01 AM
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Gregg ) writes:
Behold, Leon Heller signalled from keyed 4-1000A filament: "John" wrote in message ... Does anyone know of a multimode detector IC that will handle SSB, AM and FM? Looking at an old ARRL handbook I can see LM373. Is there a more modern chip? You can do all those modes with a DSP. 8-) Leon How many 12AU7's do I need to make that? ;-p Well, you wouldn't be using 12AU7's. At the very least, you'd be using Compactrons to get maximum tube count per envelope. But likely, Nuvistors or sub-miniature tubes would be the only way to do it, if it could be done, since they are so much smaller. Michael VE2BVW |
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#16
May 28th 04, 11:18 AM
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All of the available lot plus the next production run ;o)
73, Dave, N3HE "Gregg" wrote in message news:LgAtc.27519$SQ2.5451@edtnps89... SNIP How many 12AU7's do I need to make that? ;-p -- Gregg *It's probably useful, even if it can't be SPICE'd* http://geek.scorpiorising.ca |
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#17
May 28th 04, 11:18 AM
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All of the available lot plus the next production run ;o)
73, Dave, N3HE "Gregg" wrote in message news:LgAtc.27519$SQ2.5451@edtnps89... SNIP How many 12AU7's do I need to make that? ;-p -- Gregg *It's probably useful, even if it can't be SPICE'd* http://geek.scorpiorising.ca |
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#18
May 28th 04, 12:41 PM
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On Tue, 25 May 2004 15:47:32 GMT, "Harold E. Johnson"
wrote: Does anyone know of a multimode detector IC that will handle SSB, AM and FM? Looking at an old ARRL handbook I can see LM373. Is there a more modern chip? I have some 373's and I think, some 273's as well if you'd like to try your hand at one. (free to good home) W4ZCB It was a thread short while ago, you may also find some info on my page http://home.online.no/~la8ak/c11.htm - unfortunately I had to PC crashes this year so I cannot give more info, but believe Pete KE9OA had some boards using somewhat more up-to-date solution 73 jm |
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#19
May 28th 04, 12:41 PM
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On Tue, 25 May 2004 15:47:32 GMT, "Harold E. Johnson"
wrote: Does anyone know of a multimode detector IC that will handle SSB, AM and FM? Looking at an old ARRL handbook I can see LM373. Is there a more modern chip? I have some 373's and I think, some 273's as well if you'd like to try your hand at one. (free to good home) W4ZCB It was a thread short while ago, you may also find some info on my page http://home.online.no/~la8ak/c11.htm - unfortunately I had to PC crashes this year so I cannot give more info, but believe Pete KE9OA had some boards using somewhat more up-to-date solution 73 jm |
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#20
May 28th 04, 10:17 PM
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