Re: [IRCA] Part 15: an explanation (and loopholes?)

["Joe Miller, AB8YP" <ab8yp@xxxxxxxxx>]

Yep, yep. Out of four requests made in the last year,
only one still hasn't responded. I think most beacon
ops like to know how far their signals can be heard.

73 de Joe

--- kh2ar@xxxxxxxxxxx wrote:

> Yup - I've heard him in Memphis all the way down to
> the lowest power setting. And he has a nice QSL card
> which he'll gladly send for an SASE.
> 
> 73s, Jim Pogue/KH2AR
> 
> -------------- Original message -------------- 
> From: "chris and anne" <tantwo@xxxxxxxxxxxxx> 
> 
> > Hey Y'all.....go to QRZ.com....and fill in the
> call : N4ES....in the upper 
> > left box and click on it. Bill runs a neat 10
> meter beacon that steps the 
> > power down from 20 wts to 2 wts. to 200 mw to 20
> mw.....you can read all 
> > the details on it on his QRZ page. I've heard all
> 4 tones here several 
> > times....yes, 1/50 of a watt can be heard many
> miles away. 73, Chris 
> > K4NHL S.C. 
> > ----- Original Message ----- 
> > From: "Joe Miller, AB8YP" 
> > To: "Mailing list for the International Radio Club
> of America" 
> > 
> > Sent: Thursday, July 19, 2007 12:22 PM 
> > Subject: Re: [IRCA] Part 15: an explanation (and
> loopholes?) 
> > 
> > 
> > > Mr. Taylor, 
> > > 
> > > I agree with you. It's my understanding though
> that 
> > > the 100 mw is measured at a distance of 30
> meters from 
> > > the antenna. Depending on the loss of signal
> strength, 
> > > output power at the antenna can be compensated. 
> > > 
> > > On a side note, I know of a ham operator within 
> > > 200-400 miles of me who took an old CB radio, 
> > > converted it to transmit on ten meters, and uses
> it 
> > > for a CW beacon with one watt of power. How far
> does 
> > > the signal go? I heard it from my home.... 
> > > 
> > > 73 de Joe (AB8YP) 
> > > 
> > > 
> > > --- Charles A Taylor wrote: 
> > > 
> > >> At 03:18 AM 7/19/2007 -0400, you wrote: 
> > >> >If it's Part 15, it's limited to 100MW ERP
> from 
> > >> each transmitter into a 3 
> > >> >meter antenna.. otherwise it isn't legal. 
> > >> 
> > >> 
> > >> Paul, 
> > >> 
> > >> What Part 15 says is that the D-C input into
> the 
> > >> final shall not exceed 
> > >> 100 mW*, not 100 mW ERP. Also, the total length
> of 
> > >> the antenna, feedline 
> > >> and ground connection shall not exceed 3
> meters. 
> > >> 
> > >> * You mean mW=milliwatts. MW=megawatts! 
> > >> 
> > >> Effectively, that means the final is going to
> be 
> > >> VERY close to the 
> > >> antenna. Reading the "letter of the law," I see
> no 
> > >> averse language 
> > >> that prohibits a complete radial system. THAT
> would 
> > >> make a BIG 
> > >> difference in a 100 mW's reach/coverage. 
> > >> 
> > >> Also, since the D-C input is fixed at 100 mW, I
> see 
> > >> no averse 
> > >> language that limits the R-F input to the final
> to 
> > >> any level. 
> > >> That means, for example, if one uses a
> grounded-grid 
> > >> or grounded-base 
> > >> final, if driver feeds 50 mW into the final it
> will 
> > >> also appear in the 
> > >> output for a total of 150 mW! 
> > >> 
> > >> It looks legal to me. 
> > >> 
> > >> Our barn has a galvanized roof and years ago I
> took 
> > >> the time and trouble 
> > >> to bond the sheets together.I also put up a
> 10-foot 
> > >> mast atop the center 
> > >> of the roof. 
> > >> But I never carried through and put a 100-mW 
> > >> transmitter up there. I 
> > >> may go berzerk and put the mast back up and try
> a 
> > >> small BC station or 
> > >> beacon. 
> > >> 
> > >> 
> > >> >Meaning, they can synch more then one
> transmitter 
> > >> together as long as none 
> > >> >of the individual transmitters exceed 100MW
> ERP 
> > >> with a 3 meter antenna 
> > >> 
> > >> Got that right! 
> > >> 
> > >> Charles 
> > >> 
> > >> Charles A Taylor, WD4INP 
> > >> 
> > >> Greenville, North Carolina 
> > >> 
> > >> 
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=== message truncated ===



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