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Last Post by Anonymous 11 years ago
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 Anonymous
(@Anonymous)
Posts: 0
 

TheLegacy said: "To drive the amplifier it takes 200mW input."

That is an incorrect and incomplete take on what the literature for the Panaxis-5000 actually says.

It says "To drive the amplifier to 5 Watts it takes 200 mW input."

Notice that it has an input level control which will control WHATEVER INPUT LEVEL YOU GIVE IT to an amplified level which will be greater than the input level.

Since we're talking about less than 1 Watt output power this circuit would perform very well to increase the power of current part 15 FM transmitters.


 
Posted : 07/09/2015 10:39 am
 Anonymous
(@Anonymous)
Posts: 0
 

If we get 1 Watt to a Watt what would the input need to be?  My Sainsonic puts out -48dbm at low power about 16 nano watts.  Would that give me more than 500 mW?  I do know that at 500 mW you'd really be pushing things even if they get this legal and to pass.  I'm looking at a petition for 1 Watt or maybe 700 to 800 mW.  this leave a little room.  And do remember that my proposal is into a Rubber Duck or telescoping antenna.  So you'd get more range but you need to be mindful of not going over that limit in wattage.  It should be easier however than field stringth to figure out.  Again we need to look at the test for the Decade CM-10 and this will help a lot.  Plus I would like to see the range of this.  More transmitters are comming out all the time.


 
Posted : 07/09/2015 1:23 pm
 Anonymous
(@Anonymous)
Posts: 0
 

Plug the RF output of the little FM transmitter into the RF Amplifier, turn the input to the amplifier up until you have 1 Watt, or whatever you are aiming for.

That way you never need to know the power output of the little amplifier.


 
Posted : 07/09/2015 2:08 pm
 Anonymous
(@Anonymous)
Posts: 0
 

Hmmm well that may be great as long as the amplifier is very clean and didn't add harmonics.  I'm looking at how wide this amplifier is.  Maybe will require some band pass filters to be sure it doesn't inject spurs and harmonics into the signal.  I can't remember who it was, but a ham operator used a wide band amp on 2 meters and it was causing interference to a neighbors TV.  Come to find out the amplifier was causing all sorts of junk all over the spectrum.  Most chinese transmitters with built in amps are actually wide band amps and this is where teh harmonics come from.  So one would have to use extreme caution and be sure its clean.


 
Posted : 07/09/2015 6:35 pm
 Anonymous
(@Anonymous)
Posts: 0
 

Something TheLegacy said a few posts back make me think of something very important that we should add to the final petition to the FCC for rule change...

We should ask the FCC to INCLUDE INFORMATION ABOUT MAKE AND MODEL OF TRANSMITTER used in every claim of a violation made either by NOUO or other type of violation notice.

We need that information so we can know if transmitters we use, like a Wholehouse 3.0 or Scosche, are being found in violation.

The way it is now the FCC gives no clue about what transmitting equipment is involved in a claim of violation.


 
Posted : 09/09/2015 10:09 am
 Anonymous
(@Anonymous)
Posts: 0
 

Why not contact the Audio Divison boss and ask why they don't include that information?


 
Posted : 10/09/2015 6:21 am
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