Path: csiph.com!eternal-september.org!feeder.eternal-september.org!mx02.eternal-september.org!.POSTED!not-for-mail From: jimp@specsol.spam.sux.com Newsgroups: sci.physics Subject: Re: long antenna Date: Sat, 21 Nov 2015 00:34:18 -0000 Organization: A noiseless patient Spider Lines: 43 Sender: Jim Pennino Message-ID: References: <89abd246-ce2f-4de3-ad7c-ea252c3c5697@googlegroups.com> <9p62ic-29l.ln1@mail.specsol.com> <37ee22b0-bbbe-419e-995d-1fe401582376@googlegroups.com> Injection-Info: mx02.eternal-september.org; posting-host="db4120ef82bbc153014637d4cd15a795"; logging-data="8788"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+U79HMe94WjIPX6xDqDyyq" User-Agent: tin/2.2.1-20140504 ("Tober an Righ") (UNIX) (SunOS/5.10 (i86pc)) Cancel-Lock: sha1:WEFBE1j9ybyRm2TFHKI7N3njH20= Xref: csiph.com sci.physics:534309 reber g=emc^2 wrote: > On Thursday, November 19, 2015 at 4:46:06 PM UTC-8, ji...@specsol.spam.sux.com wrote: >> reber g=emc^2 wrote: >> > On Tuesday, November 17, 2015 at 10:42:09 AM UTC-8, RichD wrote: >> >> During my workout yesterday, I attached a 3 meter >> >> extension to the earphone cord of my radio, as I >> >> wanted to place it at a distance. >> >> The cord is the antenna. >> >> >> >> I was indoors, where the reception is usually crummy. >> >> I figured the longer line should improve performance, >> >> right? No! The reception was barely decipherable. >> >> >> >> Can anyone explain the physics here? >> >> >> >> -- >> >> Rich >> > >> > FM goes through walls better than AM you can get music from Hawaii to Calif.Ham radio goes with AM. TreBert >> >> Nonsense. >> >> Broadcast AM goes through walls much better than broadcast FM. >> >> The HAM radio use of AM is about the same as hunting with a bow and arrow, >> only used these days by a few nostalgics. >> >> >> -- >> Jim Pennino > > Bow an Arrow have lots going for them.AM has lots going for it to cover 1,000s of miles.TreBert The distance coverage of AM broadcast has nothing to do with the modulation method. The bow and arrow, muzzle loading black powder firearms, and AM on the HAM bands all have nostalgia value, but none are mainstream. -- Jim Pennino