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DB, here's an example taking it to an extreme, I use a Scorpion SA680 on my car, fully retracted it is around 1/4wl on 10m, however fully extended on 80m it is no where near 1/4 wl, so it is a shortened antenna on an inadequate ground, we are probably talking single percentage points efficiency on this particular band

[QUOTE="northern35s, post: 442136, member: 17216"] DB, here's an example taking it to an extreme, I use a Scorpion SA680 on my car, fully retracted it is around 1/4wl on 10m, however fully extended on 80m it is no where near 1/4 wl, so it is a shortened antenna on an inadequate ground, we are probably talking single percentage points efficiency on this particular band ;) [/QUOTE]

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