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In my opinion, if you're considering stacking with hf, just go all out, otherwise it's not worth it. It does also depend on your situation and requirements. For instance, you may stack at certain spacing and loose your rear rejection. All of a sudden that street light is affecting your receive in a critical direction. You need to do your research on the half power beam width and calculate the appropriate spacing. You have to realise that achieving an extra 3db is not realistic, let's say you're chasing 2.5. Now you have figured out the spacing, you realise you're going to have to get the top beam up real high (one stacked above the other) because otherwise the bottom beam will be too close to the ground, when ideally you want both beams to be in near identical surroundings. Then you have to pay attention to the feedline, phasing harness/power divider. Then there's the bandwidth associated with this because it is cut to the design frequency. See how the single larger beam is now looking more attractive? Go all out or not at all, and I mean two big beams as well.

<blockquote data-quote="arc1" data-source="post: 665778"><p>In my opinion, if you&#039;re considering stacking with hf, just go all out, otherwise it&#039;s not worth it. It does also depend on your situation and requirements. For instance, you may stack at certain spacing and loose your rear rejection. All of a sudden that street light is affecting your receive in a critical direction. You need to do your research on the half power beam width and calculate the appropriate spacing. You have to realise that achieving an extra 3db is not realistic, let&#039;s say you&#039;re chasing 2.5. Now you have figured out the spacing, you realise you&#039;re going to have to get the top beam up real high (one stacked above the other) because otherwise the bottom beam will be too close to the ground, when ideally you want both beams to be in near identical surroundings. Then you have to pay attention to the feedline, phasing harness/power divider. Then there&#039;s the bandwidth associated with this because it is cut to the design frequency. See how the single larger beam is now looking more attractive? Go all out or not at all, and I mean two big beams as well.</p></blockquote><p></p>

[QUOTE="arc1, post: 665778"] In my opinion, if you're considering stacking with hf, just go all out, otherwise it's not worth it. It does also depend on your situation and requirements. For instance, you may stack at certain spacing and loose your rear rejection. All of a sudden that street light is affecting your receive in a critical direction. You need to do your research on the half power beam width and calculate the appropriate spacing. You have to realise that achieving an extra 3db is not realistic, let's say you're chasing 2.5. Now you have figured out the spacing, you realise you're going to have to get the top beam up real high (one stacked above the other) because otherwise the bottom beam will be too close to the ground, when ideally you want both beams to be in near identical surroundings. Then you have to pay attention to the feedline, phasing harness/power divider. Then there's the bandwidth associated with this because it is cut to the design frequency. See how the single larger beam is now looking more attractive? Go all out or not at all, and I mean two big beams as well. [/QUOTE]

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