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Hiya

Yeah, the mobile bit came from the fact, because antennas used in a mobile situation, mostly on higher frequency bands are thus vertical polarised so that it becomes easier to use the antennas with ground wave or local communications.

Please forgive me, if I painted a slightly confusing picture.:blush:

Recently, I used a FT-817 on battery with a Diamond 10 m antenna whilst using a mag mount to do some amazing DX so this has coloured my thoughts on the subject.

All though, the theory still applies to a 5/8 vertical on 12 to 10 mhz and a quad, but it would not matter because in the case of f2 propagation, this layer is upto 70 miles thick so the signal has many degrees of freedom to bend and thus change direction depending on local ionization values.

Anyway, unless your QTH has severe space constraints, if you are that keen then, why not just have two antennas? End of problem!

<blockquote data-quote="slateblue" data-source="post: 306828" data-attributes="member: 17658">Hiya<img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":)" title="Smile&nbsp; &nbsp; :)"&nbsp; data-smilie="1"data-shortname=":)" />Yeah, the mobile bit came from the fact, because antennas used in a mobile situation, mostly on higher frequency bands are thus vertical polarised so that it becomes easier to use the antennas with ground wave or local communications.&nbsp; Please forgive me, if I painted a slightly confusing picture.:blush:Recently, I used a FT-817 on battery with a Diamond 10 m antenna whilst using a mag mount to do some amazing DX so this has coloured my thoughts on the subject.All though, the theory still applies to a 5/8 vertical on 12 to 10 mhz and a quad, but it would not matter because in the case of f2 propagation, this layer is upto 70 miles thick so the signal has many degrees of freedom to bend and thus change direction depending on local ionization values.Anyway, unless your QTH has severe space constraints, if you are that keen then, why not just have two antennas?&nbsp; End of problem!</blockquote>

[QUOTE="slateblue, post: 306828, member: 17658"] Hiya:) Yeah, the mobile bit came from the fact, because antennas used in a mobile situation, mostly on higher frequency bands are thus vertical polarised so that it becomes easier to use the antennas with ground wave or local communications. Please forgive me, if I painted a slightly confusing picture.:blush: Recently, I used a FT-817 on battery with a Diamond 10 m antenna whilst using a mag mount to do some amazing DX so this has coloured my thoughts on the subject. All though, the theory still applies to a 5/8 vertical on 12 to 10 mhz and a quad, but it would not matter because in the case of f2 propagation, this layer is upto 70 miles thick so the signal has many degrees of freedom to bend and thus change direction depending on local ionization values. Anyway, unless your QTH has severe space constraints, if you are that keen then, why not just have two antennas? End of problem! [/QUOTE]

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