I went out an bought a 50 henery choke from Peter Dahl. It cost $200.00 I think, but is very nice. It works fine at 2000 volts and 400 ma on the 813 rig. I noticed that playing with the cap value changed the sound of the transmitter quite a bit, more is not always better. I cant say removing the current from the cvm5 seemed to help the sound of the rig much.
Maybe the cvm5 is not so bad to start with... Brett N2DTS > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Geoff/W5OMR > Sent: Tuesday, November 25, 2003 7:38 AM > To: amradio@mailman.qth.net > Subject: Re: [AMRadio] Re: Modulation transformer ID and repair > > > > > > > Yow! > > > > 3000VDC @ 300mA = 10,000 ohms. (This is where the transmitter lives > > according to the notes I have on it) > > > perhaps thats what it's capable of, but you're not going to > run it there are ya? > > Come up with a more realistic power level, and go from there. > For that > matter, 60 Hy will probably do you nicely, as long as the > iron can handle > series current through them. > > > 10,000 ohms = 80H @ 200 Hz > > I ran 2000V at 250mA for the longest time, with only 40Hy of > choke, and > never had a problem. the highest rating of current thrugh > one of the chokes > was 275mA (whiich is why I stayed down around 250mA - besides, 500w > DC input is ~around~ 350~375w of carrier out... but, man the > positive peaks > I had then... (http://www.qsl.net/wa5bxo/asyam/aam3.html) > > > And I suppose I had better avoid swinging chokes here too. > > > > Anyone have a suitable reactor for sale? I have a couple of > 10's, but > > obviously this would not be near enough. > > > > I guess the main point in putting reactors in series would > be to place > > the highest voltage-rated one at the modulated voltage point. > > Voltage? No... Current? THAT's what carries the mail! > > 73 = Best Regards, > -Geoff/W5OMR > > > _______________________________________________ > AMRadio mailing list > AMRadio@mailman.qth.net > http://mailman.qth.net/mailman/listinfo/amradio
