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Ah, that may be the issue. I'm going to test the voltage at the mains when the amp is keyed up and check for voltage loss. That meter is 40 years old if it is a day. Thanks for the tip!
In testing an a/c powered transistor amplifier, I discovered a 9 volt drop when the amp is keyed. Here are the particulars:
The electrical outlet measures a minimum of 120 volts on a 20amp circuit. The length of power run from the mains to the subpanel is 35'. The length of wire to the...
I always went to go see Steve Miller. He used to play at the Avalon Ballroom in San Francisco, which was pretty often. Back then, he was The Steve Miller Blues Band and that was in 1967. I was in high school and my friends and I were learning our chops by going to see the local Bay Area...
It was really a learning exercise for me. I just got the meter, saw the changes but couldn't account for them nor assess their impact. Your comments summarize what I learned from this. I understand better the characteristics of this antenna relative to the beam. I have two additional...
I'd like to ask a more fundamental question: Is having an impedance of 68, a reactance of 1.0 and a SWR of 1.4 necessarily bad? Put another way, what impact would the impedance of 68 have over an ideal impedance of 50?
Thanks for your input...
I changed the coax on the beam from LMR400 to 1318 (9913) and the readings are now: R = 49.5 and X = 50. I am very pleased with that. It makes me wonder what can be done to change the values on the vertical? I have adjusted it for lowest SWR. I'm thinking it is as good as the electrical...
Ah, this is VERY helpful. Thank you both for taking the time out to reply. I bought the LP-100A (and an HO-10 for which I'm trying to locate a manual) to get a better handle on what is going on with my station. With respect to SWR, I was reading that it is not the entire story. It appears...
Thank you for your reply. I'm trying to learn antennas a bit better. I wasn't trying to equal the values of R & Z but stating they were equal in value on the meter. Both R & Z changed from 55 to 65 on the vertical and I was trying to understand the impact. Here are the stats. I'm not sure...
I purchased a LP-100A computing SWR/Watt meter that displays reactance and impedance in real time. I have an Imax 2000 and a Sirio 3 element. On the beam, the R & Z are 48 and the SWR is 1.1. On my ground plane, the R & Z are 54 and the SWR is 1.3. These measurements have been rock steady...
I have wanted a 2m Gizmotchy for some time and may order one shortly. For 11 meters, I went with a flat side with a vertical on top as I didn't want the directionality of the Gizmotchy on vertical. I may put up another mast for the omni-vertical and then put up the Gizmotchy. They are really...
Sun spot activity makes local CB use a challenge. Skip reduces local comumunication effectiveness due to the intensity of 'bounced' long distance signal engery dominating receive. If you have MURS capabilities, which are higher frequencies unaffected in large part by sun spot activity, that...
Sure thing.
The Symetrix 528E has D-essing, gating, compression and EQ. It also has a speech intelligibility circuit. The BBE is a broadcast circuit that increases speech intelligibility in a very demonstrable way. I use the model 882. Lastly is a tubed compressor/limiter made by ART. In...
In reading Bob Orban's work over the years, I came to appreciate the theory behind good AM modulation. The FCC requires compliance with modulation limits so Bob designed the quintessential device that boosted modulation while limiting peaks for compliance. The result is extremely loud audio...
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