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#1
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![]() "Eric F. Richards" wrote: "phil ![]() hi Eric: i am responding here as my reader ate the thread... Quite true, but that's not what you said -- you said it was "resonant." A nit-pick, perhaps, at 3/4 wavelenghts resonance is at 736-kHz. as a 2 wavelengths beverage: 1.9-MHz. your antenna is quite capable on MW. Oh, I don't argue *that*, I just argue that it wasn't resonant. Not that it matters, really, my WR-G303i reports its signal strength as 30 mV 120 miles away on a 400 foot wire broadside to the antenna. Flamethrower, indeed. As for the "flamethrower" at the end of the wire, they are in violation of 47 CFR 22.369, which explicitly lays out the field strength limits on Table Mountain. They may get grandfathered in, but now that the feds are reopening Table Mountain for NIST projects, the local HDTV wannabes are chafing at the restrictions -- even though their antennas would be about 40 miles away. what frequency are they on? Dunno. I don't keep up with the local doings of the broadcasters much. I assume they are in the old standard TV UHF band; 47 CFR 369 says that from 470 to 890 MHz, field strength on Table Mountain must be less than 30 mV/m. radios are black boxes: feed them signals within specs and they perform predictably. ICOM probably left off the LW BPF to save $1. companies are cheap. Actually I got word from someone who said that the '75 was considered a work in progress that never progressed. That's an understatement if I ever heard one! i know what the R75 is and is not. Then all I ask is that you remember that when you brag on it. Good bargain? definitely. Ultimate radio? No. i am lucky to have Pete as a mentor. That you are. I wish I was fluent enough in electronics to be able to speak the same language as Pete. if you gain access to that antenna try your RX340 and bring along a 7030 owner. No radio is perfect; the '7030 wouldn't hold up out there... To me the question would be whether or not the '340 would. Eric -- Eric F. Richards, "Nature abhors a vacuum tube." -- J. R. Pierce, Bell Labs, c. 1940 |
#2
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In article ,
N8KDV wrote: "Eric F. Richards" wrote: "phil ![]() hi Eric: i am responding here as my reader ate the thread... Quite true, but that's not what you said -- you said it was "resonant." A nit-pick, perhaps, at 3/4 wavelenghts resonance is at 736-kHz. as a 2 wavelengths beverage: 1.9-MHz. your antenna is quite capable on MW. Oh, I don't argue *that*, I just argue that it wasn't resonant. Not that it matters, really, my WR-G303i reports its signal strength as 30 mV 120 miles away on a 400 foot wire broadside to the antenna. Flamethrower, indeed. As for the "flamethrower" at the end of the wire, they are in violation of 47 CFR 22.369, which explicitly lays out the field strength limits on Table Mountain. They may get grandfathered in, but now that the feds are reopening Table Mountain for NIST projects, the local HDTV wannabes are chafing at the restrictions -- even though their antennas would be about 40 miles away. what frequency are they on? Dunno. I don't keep up with the local doings of the broadcasters much. I assume they are in the old standard TV UHF band; 47 CFR 369 says that from 470 to 890 MHz, field strength on Table Mountain must be less than 30 mV/m. radios are black boxes: feed them signals within specs and they perform predictably. ICOM probably left off the LW BPF to save $1. companies are cheap. Actually I got word from someone who said that the '75 was considered a work in progress that never progressed. That's an understatement if I ever heard one! Welcome to the real world. Engineers will play with a design until they are happy with it but management runs the show. As soon as the pointy haired boss thinks that the design has met its goals the effort ends. -- Telamon Ventura, California |
#3
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hi Telamon:
Actually I got word from someone who said that the '75 was considered a work in progress that never progressed. That's an understatement if I ever heard one! Welcome to the real world. Engineers will play with a design until they are happy with it but management runs the show. As soon as the pointy haired boss thinks that the design has met its goals the effort ends. sounds like the voice of experience. regards, phil ![]() |
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