Re: [IRCA] Powell the (non) pirate
You can NOT do 100 Milliwatts at 1720Khz. Part 15 AM applies to regular AM broadcast band. Id you operated with 100MW at 1720, even though thats part 15 AM power levels.. youd be considered a pirate. Am is limited to 100MW, FM is field strength Paul On 7/4/07, Joe Miller, AB8YP [EMAIL PROTECTED] wrote: Hi Charles I think you can legally do 100 mW at 1720 kHz. Anyone know anything contradicting that statement? http://a257.g.akamaitech.net/7/257/2422/13nov20061500/edocket.access.gpo.gov/cfr_2006/octqtr/47cfr15.223.htm Section 15.223 (link is above) says The field strength of any emission within the band 1.705-10.0 MHz shall not exceed 100 microvolts/meter at a distance of 30 meters. There are some exceptions, of course. Question: if the limit is 100 microvolts/meter at a distance of 30 meters, using the inverse square law, would that be roughly the same as 3 watts at the antenna? Hope this helps 73 de Joe AB8YP TV dinner still cooling? Check out Tonight's Picks on Yahoo! TV. http://tv.yahoo.com/ ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com -- Sincerely, Paul B. Walker, Jr. www.walkerbroadcasting.com www.myspace.com/walkerbroadcasting ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
Re: [IRCA] Powell the (non) pirate
Paul, The quote provide is an exact quote from Part 15. The Chapter before that one covers the 525-1705 kHz band. If you don't believe me, open up the link that I provided and read it. Joe --- Paul B. Walker, Jr. [EMAIL PROTECTED] wrote: You can NOT do 100 Milliwatts at 1720Khz. Part 15 AM applies to regular AM broadcast band. Id you operated with 100MW at 1720, even though thats part 15 AM power levels.. youd be considered a pirate. Am is limited to 100MW, FM is field strength Paul On 7/4/07, Joe Miller, AB8YP [EMAIL PROTECTED] wrote: Hi Charles I think you can legally do 100 mW at 1720 kHz. Anyone know anything contradicting that statement? http://a257.g.akamaitech.net/7/257/2422/13nov20061500/edocket.access.gpo.gov/cfr_2006/octqtr/47cfr15.223.htm Section 15.223 (link is above) says The field strength of any emission within the band 1.705-10.0 MHz shall not exceed 100 microvolts/meter at a distance of 30 meters. There are some exceptions, of course. Question: if the limit is 100 microvolts/meter at a distance of 30 meters, using the inverse square law, would that be roughly the same as 3 watts at the antenna? Hope this helps 73 de Joe AB8YP TV dinner still cooling? Check out Tonight's Picks on Yahoo! TV. http://tv.yahoo.com/ ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com -- Sincerely, Paul B. Walker, Jr. www.walkerbroadcasting.com www.myspace.com/walkerbroadcasting ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com Yahoo! oneSearch: Finally, mobile search that gives answers, not web links. http://mobile.yahoo.com/mobileweb/onesearch?refer=1ONXIC ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
Re: [IRCA] Powell the (non) pirate
Paul, Are all of these Talking houses 1610, all part 15? The ones I have heard around here seem in the 1/10 of a watt range. If they are more, they don't have the coverage. 73, Patrick Patrick Martin KAVT Reception Manager ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
Re: [IRCA] Powell the (non) pirate
Joe Miller, AB8YP wrote: Question: if the limit is 100 microvolts/meter at a distance of 30 meters, using the inverse square law, would that be roughly the same as 3 watts at the antenna? Field strength measured in V/m vs. distance from the radiator is a straight inverse, rather than an inverse square, isn't it? I'm probably wrong, so maybe somebody who knows could explain field strength measurements Watts per square meter seems more intuitive to me, but that's not what the FCC calls for. -- Mesa Mike, N6KUY, WDX6O Los Alamos, New Mexico (DM65uv) Los Alamos is Spanish for More than one Alamo -- Dave Barry Online logbooks: http://mesamike.org/dxlog?account=mikew DX audio clips: http://mesamike.org/radio/mwdx/audio/dxclips ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
Re: [IRCA] Powell the (non) pirate
Are any of you noticing fewer talking houses? I am. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Patrick Martin Sent: Thursday, July 05, 2007 12:08 PM To: Mailing list for the International Radio Club of America Subject: Re: [IRCA] Powell the (non) pirate Paul, Are all of these Talking houses 1610, all part 15? The ones I have heard around here seem in the 1/10 of a watt range. If they are more, they don't have the coverage. 73, Patrick Patrick Martin KAVT Reception Manager ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
Re: [IRCA] Powell the (non) pirate
I have not heard one in sometime, but they aren't common out here on the OR coast anyway. Patrick Martin KAVT Reception Manager ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
Re: [IRCA] Powell the (non) pirate
In case anyone is interested in talking house systems: http://www.talkinghouse.com/newweb/. ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
Re: [IRCA] Powell the (non) pirate
Yup, all these Talking Houses are Part 15 :) Paul On 7/5/07, Patrick Martin [EMAIL PROTECTED] wrote: Paul, Are all of these Talking houses 1610, all part 15? The ones I have heard around here seem in the 1/10 of a watt range. If they are more, they don't have the coverage. 73, Patrick Patrick Martin KAVT Reception Manager ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com -- Sincerely, Paul B. Walker, Jr. www.walkerbroadcasting.com www.myspace.com/walkerbroadcasting ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
Re: [IRCA] Powell the (non) pirate
I have only heard 3 or 4 in the last 10 years, and none since the City of Rochester Hills implemented their TIS/HAR station a couple of years ago. The most distant talking house measured out at 1.9-2.0 miles, but I had to use my Sony ICF-2010 and Radio Loop antenna to hear it at that distance. Using the car radio, the range was only about 3 blocks. 73 de Joe Miller, AB8YP, Troy, MI --- Patrick Martin [EMAIL PROTECTED] wrote: I have not heard one in sometime, but they aren't common out here on the OR coast anyway. Patrick Martin KAVT Reception Manager Never miss an email again! Yahoo! Toolbar alerts you the instant new Mail arrives. http://tools.search.yahoo.com/toolbar/features/mail/ ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
Re: [IRCA] Powell the (non) pirate
Tim, Talking houses are common in the Vancouver, WA area. The house down the street had one for about 6 months. The house is still for sale, but does not have the transmitter anymore. Another house around here was also on the air for a short time. I drove around yesterday for about 4 miles and heard nothing but static on 1610. Dennis, Vancouver, WA -- Original message -- From: Tim Kridel [EMAIL PROTECTED] Are any of you noticing fewer talking houses? I am. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Patrick Martin Sent: Thursday, July 05, 2007 12:08 PM To: Mailing list for the International Radio Club of America Subject: Re: [IRCA] Powell the (non) pirate Paul, Are all of these Talking houses 1610, all part 15? The ones I have heard around here seem in the 1/10 of a watt range. If they are more, they don't have the coverage. 73, Patrick Patrick Martin KAVT Reception Manager ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
Re: [IRCA] Powell the (non) pirate
I wonder if someone ever tried to QSL a talking house. LOL. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Joe Miller, AB8YP Sent: Thursday, July 05, 2007 1:32 PM To: Mailing list for the International Radio Club of America Subject: Re: [IRCA] Powell the (non) pirate I have only heard 3 or 4 in the last 10 years, and none since the City of Rochester Hills implemented their TIS/HAR station a couple of years ago. The most distant talking house measured out at 1.9-2.0 miles, but I had to use my Sony ICF-2010 and Radio Loop antenna to hear it at that distance. Using the car radio, the range was only about 3 blocks. 73 de Joe Miller, AB8YP, Troy, MI --- Patrick Martin [EMAIL PROTECTED] wrote: I have not heard one in sometime, but they aren't common out here on the OR coast anyway. Patrick Martin KAVT Reception Manager Never miss an email again! Yahoo! Toolbar alerts you the instant new Mail arrives. http://tools.search.yahoo.com/toolbar/features/mail/ ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
Re: [IRCA] Powell the (non) pirate
Let us change the name of the thread if my name is involvedsnark! snark! NOW how many of you have done a little AM that was far from part 15? A friend of mine and I discovered that the oscillator of a Motorola 61T23 would quiet a graveyard frequency for almost a block. That was a 6SA7. So we modulated the tube, and ran a wire from my 200 foot long wire. We found a blank frequency somewhere in the low 800's and headed out in his 1960 Chevy that he had at school (Newberry College). At 8 miles this was still coming in well and we got scared and raced back and turned it off.. Powell POP email is powell at backroads DOT net ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
Re: [IRCA] Powell the (non) pirate
--- Powell E. Way III W4OPW [EMAIL PROTECTED] wrote:
Let us change the name of the thread if my name is
involvedsnark! snark!
NOW how many of you have done a little AM that was
far from part 15? A friend of mine and I discovered
that the oscillator of a Motorola 61T23 would quiet a
graveyard frequency for almost a block. That was a
6SA7. So we modulated the tube, and ran a wire from my
200 foot long wire. We found a blank frequency
somewhere in the low 800's and headed out in his 1960
Chevy that he had at school (Newberry College). At 8
miles this was still coming in well and we got scared
and raced back and turned it off..
Of course as 12SA7 does the same. A friend and I discovered the same
thing when I was in high school. I ran it to my DX antenna at the time
which consisted of 3 sides of a triangle, each 60-70' long, set up so I
could swicth them in and out, so I switched them all in - probably
created an absolutely awful pattern, but it didn't even get 5 miles ;-{
Russ Edmunds
Blue Bell, PA ( 360' ASL )
[15 mi NNW of Philadelphia]
40:08:45N; 75:16:04W, Grid FN20id
[EMAIL PROTECTED]
FM: Yamaha T-80 Onkyo T-450RDS w/ APS9B @15'
AM: Hammarlund HQ-150 4' FET air core loop
Building a website is a piece of cake. Yahoo! Small Business gives you all the
tools to get online.
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Re: [IRCA] Powell the (non) pirate
Mike, Field strength measured in V/m vs. distance from the radiator is a straight inverse, rather than an inverse square, isn't it? Yep, you are right. When field strength is measured in mv's per square meter, then it is the INVERSE square law. If mv's are measured per meter, then it is just the inverse reduction (straight line as us accountants would say). As I am thinking about all of this, I believe the inverse square law would apply to isotropic radiators, the so-called 'perfect antenna' that transmits evenly in all directions. But in the real world, almost all antennas have some sort of pattern (usually flat and to a degree circular) and it is in this instance that that the inverse reduction would occur. Idon't have the meausrement tools, but I would guess that for 100 mv at 30 meters would be roughly 1 watt at the source. Thank you for challenging me on this one, there are always new concepts to learn with radios. 73 de Joe Miller, AB8YP, Troy, MI Looking for earth-friendly autos? Browse Top Cars by Green Rating at Yahoo! Autos' Green Center. http://autos.yahoo.com/green_center/ ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
Re: [IRCA] Powell the (non) pirate
Tim, I think someone on the list QSL'd a talking house sometime back. I was going to, but the person that set up the talking house I heard is a customer of mine, so I decided to let it go. 73, Patrick Patrick Martin KAVT Reception Manager ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
Re: [IRCA] Powell the (non) pirate
Thanks Paul. Much appreciated. Patrick Martin KAVT Reception Manager ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
[IRCA] Powell the (non) pirate
At 04:16 PM 7/4/2007 -0700, you wrote: --- Patrick Martin [EMAIL PROTECTED] wrote: Greetings, After adding a second good copper pipe ground rod at the termination point of the SW EWE, I have found I have really increaded the nulls. How deep are your ground rods? I wonder if going really deep will help or do nothing? I think this is also a function of ground conductivity. Powell, Around here, probably an 8-foot ground is minimum. Don't forget that a ground rod is going to have capacitive coupling to earth, so the equivalent R-F resistance will be lower than the D-C resistance. I'm not going to do it, but *IF* I fired up on 1720 with a good and correct antenna, could you hear it IF I used one watt? Patrick may not, but I SURE would. I used to hear three 100-mW MEDFER beacons (VA, MD and SC) above 1600 before X-Band started up. I think you can legally do 100 mW at 1720 kHz. Anyone know anything contradicting that statement? Powell (not planning to be a pirate...) Charles Charles A Taylor, WD4INP Greenville, North Carolina ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
Re: [IRCA] Powell the (non) pirate
Hi Charles I think you can legally do 100 mW at 1720 kHz. Anyone know anything contradicting that statement? http://a257.g.akamaitech.net/7/257/2422/13nov20061500/edocket.access.gpo.gov/cfr_2006/octqtr/47cfr15.223.htm Section 15.223 (link is above) says The field strength of any emission within the band 1.705-10.0 MHz shall not exceed 100 microvolts/meter at a distance of 30 meters. There are some exceptions, of course. Question: if the limit is 100 microvolts/meter at a distance of 30 meters, using the inverse square law, would that be roughly the same as 3 watts at the antenna? Hope this helps 73 de Joe AB8YP TV dinner still cooling? Check out Tonight's Picks on Yahoo! TV. http://tv.yahoo.com/ ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
Re: [IRCA] Powell the (non) pirate
Charlies Powell, I add, add, add, and add more ground rods as the years go by. They are now all copper piping though, 5 foot ones. I fiqure if one or two work fine, I will add another. The only exception has been the termination point on the SW EWE as the tree roots are close in and I have to drive the copper pipes through them. But I have two new ones in over there and that should last me for a long time. Oh yes, I added my last copper pipe this evening to the from of the NW EWE. I could not remember if I had two or three there and I did not want to dig them up to count, so I decided to add my last one. I will buy more copper pipe before long to keep as spares anyway. I think I should the way the copper prices keep going up. 73, Patrick Patrick Martin KAVT Reception Manager ___ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
