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Title: DRAKE TR-4C Post by: AE1CT on June 23, 2011, 10:43:48 PM DOES ANYONE KNOW HOW MUCH POWER THE DRAKE TR-4C PUTS OUT ON AM? I HAVE A CHANCE TO GET ONE AND WOULD LIKE TO KNOW IF IT WILL WORK FOR ME ON AM. I KNOW IT DOES 150 WATTS ON SSB AND 130 WATTS ON CW BUT DONT KNOW ABOUT AM POWER OUT.
Title: Re: DRAKE TR-4C Post by: Jim KF2SY on June 24, 2011, 12:21:45 AM My TR4CW/RIT does about 12 watts resting carrier with no modulation. When you talk, the controlled carrier goes up to about 40 watts carrier (about 160 Watts pep). Hope this helps. Title: Re: DRAKE TR-4C Post by: WQ9E on June 24, 2011, 11:11:28 AM It transmits only one sideband on AM which is generally not a problem. However if the station in contact with you has his receiver set up to receive only one sideband that will be an issue. I have run into this a couple of times as a net control operator when I select one sideband on AM receive to avoid QRM above or below. In most operation this will rarely be an issue.
The controlled carrier system used by the Drake 4 line works very well with linear amps designed for SSB and many can be used at their full SSB rating with this system. Title: Re: DRAKE TR-4C Post by: K1JJ on June 24, 2011, 11:28:52 AM http://www.amwindow.org/tech/htm/t4.htm AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
Here's some simple mods to make the T-4 Drake line sound FB on AM. (Seven simple steps) I have personally done the T-4X and understand that the TR3/4 models use basically the same circuitry for AM. Take out your schematic and see if it applies to your TR4-C. The fidelity obtained with these mods is well worth the effort. 73, Tom, K1JJ |