Re: [digitalradio] Some thoughts on antenna polarization for emergency use

2008-03-02 Thread George Gallis
I recall reading years ago horz TV may have been picked over vert because some test showed there to be less multipath and therefore less reflections and ghosts on the picture. I have no idea whether that is true. I remember seeing vert TV antennas in some other countries. AL7BX/ George

Re: [digitalradio] Some thoughts on antenna polarization for emergency use

2008-03-01 Thread kh6ty
Ted, I agree that in a single array configuration it does not have the gain realizable by a directive antenna, no omni-directional antenna will. But in those cases where a rotatable antenna is not feasible nor permitted (as on some public structures housing EOCs) This illustrates the core of

Re: [digitalradio] Some thoughts on antenna polarization for emergency use

2008-03-01 Thread Rick
Lots of interesting things. I completely accept that VHF SSB (which can also mean digital) communication is really the only practical longer distance VHF mode that works without infrastructure. But will we have a turn around in the number of operators who actually use these modes? There is no

Re: [digitalradio] Some thoughts on antenna polarization for emergency use

2008-03-01 Thread kh6ty
Rick, I completely accept that VHF SSB (which can also mean digital) communication is really the only practical longer distance VHF mode that works without infrastructure. But will we have a turn around in the number of operators who actually use these modes? There is no question that an

Re: [digitalradio] Some thoughts on antenna polarization for emergency use

2008-03-01 Thread kh6ty
Please correct FT-890 to read FT-897. Thanks, Skip KH6TY

Re: [digitalradio] Some thoughts on antenna polarization for emergency use

2008-03-01 Thread Walt DuBose
Moving on to mode/throughput, let me put on my Incident Commander cap... As an incident commander, I would rather have a printed/written message than one delivered verbally. If I know that you have a digital print system, I would want that and especially if you tell me its error free. The

Re: [digitalradio] Some thoughts on antenna polarization for emergency use

2008-02-29 Thread kh6ty
: Re: [digitalradio] Some thoughts on antenna polarization for emergency use How about the best of both worlds (or at least an approximation thereof). I would suggest for two meter home station applications that a lindenblad antenna is a versatile compromise omni-directional antenna