The Motorola document is based on the use of the Spectrun base loaded antennas sold by Mother. The Spectrum antenna is a series coil arrangement, not a shunt fed or tapped coil; this is very important!
The chart works quite well for the Spectrum antennas and will probably work for any other series fed LB coil. It will not work for any antenna that is shunt fed as myself and several others found out when trying to make two non-Motorola antennas work on a fire engine. The maker of the Untenna antennas told me once that they could be combined in the same way but the method was different; IIRC the antenna to T cables were to be quarterwaves but were for the opposing frequency. Never tried it and that was a long time ago and no notes to back up my memory. Another document exists that details using a ball mount full length whip and a Spectrum series fed LB base load in the same shared configuration. Milt N3LTQ Quoting Scott Zimmerman <[email protected]>: > skipp025 wrote: > > The Catholic Church says only the rhythm method is allowed. > I SOMEHOW don't think that 'method' will help us in this situation. > Although that's how my third child came along. (3 of 3) A BOY BTW!!!!! > (Yea, Me!!) > > >> P.S. I do have a copy of Motorola 68-80100W86 - Diplex > >> Antenna Manual. This document is written for use with > >> "standard base-loaded mobile antennas only." > > > > Is it scanned into or available in a PDF file format? I'd > > really like to see a copy if it's available and easily > > Emailed. Always nice to see how others do things... > > I thought the above was pretty much common knowledge. Please see the > attached PDF file. (Note to Mike Wa6ILQ: Please add to the RB site.) > > I was warned that this document seems to be backwards in that the length > of cable that it says is supposed to go to the higher frequency antenna, > actually goes to the lower frequency antenna and vice-versa. > > I would LOVE to know some of the theory behind this method. I was hoping > to use this on a remote base antenna with 'Station' type antennas, but I > don't think that will work since it clearly states that "Only standard > base-loaded antennas are used" > > Comments? Suggestions? Theory? > > Scott > > Scott Zimmerman > Amateur Radio Call N3XCC > 474 Barnett Road > Boswell, PA 15531 > > > skipp025 wrote: > > > ------------------------------------ > > > > Yahoo! Groups Links > > > >
