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Power and modulation AM max
Posted: Wed Apr 21, 2004 7:37 pm
by fluke281
There was recently quite a discussion about the AM MAX. Someone had suggested that it was not capable of full modulation at full power of ten to fifteen watts. Since it uses PWM technique, should it really make a difference? I would think that the larger issue would be antenna matching.
Thanks.
Posted: Mon May 31, 2004 4:03 pm
by Antler
I am interested in the AM Max transmitter too....
Modulation is very important to me. I would like to know if the max is capable of 100% modulation at full rated power before I buy.
Posted: Mon May 31, 2004 6:53 pm
by pcs
It is.
Just make sure you use 20V or more. Small fan is recommended,
LC filtered 12V power for the fan is provided on the PCB (to eliminate
any noise coming from the FAN, experts will know what I'm talking
about).
Supply is a bit tight as we're shipping backordered transmitters first.
And a list of customers is already waiting.
DSP is great, you can set almost everything via LCD menu
system, including audio low pass filter, preemphasis, compression ratio.
If needed, there's carrier level and modulation depth trimmer
on the board.
19" rack enclosures are due next week.
Posted: Fri Jun 04, 2004 11:01 pm
by Antler
Great!
Posted: Sat Jul 17, 2004 8:49 pm
by R_QRP
Watt sucking glow FET's
73 de R_QRP
Posted: Sun Jul 18, 2004 4:21 pm
by pcs
?
GLOW FETS
Posted: Mon Jul 19, 2004 11:40 pm
by Black_Hawk
pcs wrote:?
He might be referring to a RF amp minus the Mosfets that were Probably Burnt out by useing the Wrong type of N connectors on the Antenna Cable
I HAVE SEEN THAT HAPPEN SO MANY TIMES..HIGH RESISTANCE
Posted: Tue Jul 20, 2004 12:32 am
by pcs
I don' t think so.