An added effect of impedance mismatching has to do not so much with "power" transfer with mics but with frequency response. The classic D-104 - which I used for many years and still have - sounded gr
She is a member of the commission but not the Chairman. Powell is . . . 73/72, George Amateur Radio W5YR - the Yellow Rose of Texas Fairview, TX 30 mi NE of Dallas in Collin county EM13QE "Starting t
Good summary and statement of viewpoint, John. Having used an IF DSP radio since I bought the Doug Smith designed Kachina 505 DSP in 1998, and progressing through the Icom 756PRO, PRO2 and now adding
Reed, I suggest that you first check this with a dummy antenna listening on a second receiver. Check all bands. It might be better if you make up a clean tape or .wav file recording of your voice and
You need to set you email client for "word wrap" so it will keep lines short. Well, your tests would seem to eliminate any problem with the rig and your QSO makes it look like at least on 40 that the
Looks good, Reed - think you got it set just right. Grounds are most confusing to a lot of guys because there are three of them to be considered: a-c safety ground; "r-f station ground;" and lightnin
Mainly because of my own experience and that of many others who have agreed with me. See another posting I made a few minutes ago with a little more detail. Getting a genuine connection to Mother Ear
John, I am very pleased that your ORION experience has been a good one for you. It is clear that when the ORION is working properly, it is indeed a very good radio with excellent performance. Jim Rei
Mark, my experience mirrors yours. I find that I have come to depend almost unconsciously on being able to see what is happening around my tuned frequency. The resolution bandwidth of the Spectrum Sc
John, I don't know much about TT rigs, but modern rigs using PLL arrangements, DDS, etc. etc. rely upon a single frequency standard from which everything else is either derived or slaved to. There ar
Used the CIA-HF since 1998 and wouldn't be without it. Only one that plots the data and has an oscillator accurate to within 200 Hz of dial setting and stays put. Currently selling for $600 but worth
Another excellent source of programs for tuner network analysis is http://www.btinternet.com/~g4fgq.regp/index.html#S102 These programs include analyses for the L, T, and PI networks with provision f
Pete, I tend to write off the QST review articles. They must follow different editorial paths than we would like and perhaps expect. However, the ARRL Labs extended test reports are creditable and no
You know, that happened to me a few months back, Pete, and my name has been mud of this list ever since. Hard to put the toothpaste back in the tube, isn't it? Thanks for the note - I'll respond late
John, the keyed waveform spectra for both the 746PRO and the PRO2 show that the keying components are more than 50 dB down at +/- 300 Hz from the carrier frequency. Not bad . . . General agreement wi
Pete, you are disappointing me! Every posting you have made lately I agree with 100%! Every radio has warts in design, implementation and ultimate dealer/factory support. I do not believe that any on
Jim, Just to stir the pot a little more, it is usually the safest procedure to always turn on the power supply first and let it stabilize before applying the load. Does that apply here? <snip>
Stuart, I am forwarding you two postings from Roy about baluns. FYI . . . In my testing I have found my bead baluns to cover 80-10 in fine shape with "enough" balun action on 160 to be useful. Six be
Thanks for the info, Stuart. The beads I use on my 5-bead baluns are about 1-1/8" long and 1/2" in diameter and will just slip over the insulation of RG-8X. I suspect that the control cable required