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Old May 15th 05, 01:33 AM
John Smith
 
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Did you google for "plate modulation" or "grid modulation"... you should
turn something up there... even if you come across info for tube equip.,
the info is still just as accurate for transistor equip....

How about a trip to a used book store in your area to see what is available?

I see your point, I didn't say that correctly...

You are right, the information should be more available--its missing may
just be a lack of interest or anyone building am equip these days...

The pirate group and "freebanders" have groups, but you have to know someone
to be allowed into their discussions... I know "hidden chat rooms" exist on
IRC... but I have never been invited...

Warmest regards,
John
--
Marbles can be used in models with excellent results! However, if forced
to keep using all of mine up... I may end up at a disadvantage... I seem
to have misplaced some already!!!


"Netgeek" wrote in message
...
| So you're saying that there's no info because it's far too simple - so why
| bother to write it up in a text or app note?
|
| Surely there is some small amount of "finesse" involved - whether it be in
| the implementation of the modulation transformer or in trying to get the
| optimum modulation levels in general. Nobody has covered this in a text?
|
| I'm sure I could come up with some brute-force approach in doing the
| high-level modulation using a kludge transformer (the "grenade" guys
| are using simple line level transformers run "backwards")...
|
| Either there's a more "scientific" approach to this or, as you suggest,
| it's always done empirically??? Just wondering......
|
| Bill
|
| "John Smith" wrote in message
| ...
| Just run the output of any audio source of ~5 watts into a "modulation
| transformer" and have the B+ to the transmitter pass through its
| secondary...
|
| You can also construct an audio amplifier whose output power final
| "modulates" (perhaps the B+ from the audio amps final transistor/tube)
the
| B+ to the xmitter... etc... ssb is by nature 2X-plus more efficient...
| fm
| supports greater sound quality...
|
| I think detail about it is skipped simply because it is so easy to
| affect....
|
| Warmest regards,
| John
|
|


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