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Re: [TowerTalk] Two signals on the same frequency?

 To: towertalk@contesting.com Re: [TowerTalk] Two signals on the same frequency? K8RI on TT Sun, 14 Aug 2011 17:37:18 -0400 mailto:towertalk@contesting.com>
 ```On 8/14/2011 4:48 PM, Chet wrote: > I don't think you will be any louder but At least one consequence of tx's on > the same freq is a much wider bandwidth. How so? 1 or 10 all on the same frequency, the strength adds algebraically, not the width. They are the same frequency and would serve as one transmitter with twice the power in this case, but only if as others have pointed out the signals were in phase. As pointed out there is the difficulty of keeping two transmitters not on the same frequency, but other than that it's simple math. 73 Roger (K8RI) > "Hypothetically" It would likely keep the other contesters from as cq'ing > close to your frequency as they could running a single xmtr. > > Chet N4FX > > -----Original Message----- > From: towertalk-bounces@contesting.com > [mailto:towertalk-bounces@contesting.com] On Behalf Of Jari Jussila > Sent: Sunday, August 14, 2011 12:25 PM > To: towertalk@contesting.com > Subject: [TowerTalk] Two signals on the same frequency? > > > A hypothetical question: > > I have two antennas for the same band. The antennas might be same kind > (eg. two dipoles, two yagis) or different (one dipole, one vertical). > I transmit with two separate transmitters - one to one antenna - but > modulate the transmitters simultaneousl*y *with same key or microphone. > > How does my signal-strength change on the other side in comparison if I > used only one transmitter and one antenna? The antennas are not phased > to each other and they might be quite apart from each other. > > I know that the advanced contest stations have one beam to eg. JA and > one to Europe etc. But if they turned both antennas to JA, would the > signal-strength go up? > > Jari, OH2BU > _______________________________________________ > > > > _______________________________________________ > TowerTalk mailing list > TowerTalk@contesting.com > http://lists.contesting.com/mailman/listinfo/towertalk > > > _______________________________________________ > > > > _______________________________________________ > TowerTalk mailing list > TowerTalk@contesting.com > http://lists.contesting.com/mailman/listinfo/towertalk > _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contesting.com/mailman/listinfo/towertalk ```
 Current Thread Re: [TowerTalk] Two signals on the same frequency?, (continued) Re: [TowerTalk] Two signals on the same frequency?, Chet Re: [TowerTalk] Two signals on the same frequency?, Andy Re: [TowerTalk] Two signals on the same frequency?, Jim Brown Re: [TowerTalk] Two signals on the same frequency?, Jim Brown Re: [TowerTalk] Two signals on the same frequency?, K1TTT Re: [TowerTalk] Two signals on the same frequency?, K8RI on TT Re: [TowerTalk] Two signals on the same frequency?, Gary Schafer Re: [TowerTalk] Two signals on the same frequency?, Gene Smar Re: [TowerTalk] Two signals on the same frequency?, Jim Brown Re: [TowerTalk] Two signals on the same frequency?, Jim Lux Re: [TowerTalk] Two signals on the same frequency?, K8RI on TT <=