ar430w secondary antenna greatly improves signal?

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ooferomen
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Joined: 27 Aug 2006
Posts: 105

PostPosted: Tue Aug 25, 2009 22:21    Post subject: ar430w secondary antenna greatly improves signal? Reply with quote
take a look at this, swiching my RX antenna from primary to secondary really improves my signal. does this happen for anyone else?

this post is why i tried this:

https://forum.openwrt.org/viewtopic.php?id=21504
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Domino_55
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Joined: 15 Sep 2008
Posts: 88

PostPosted: Thu Aug 27, 2009 6:09    Post subject: Reply with quote
Interesting. I will test it at this weekend.
palmboy5
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Joined: 24 Feb 2008
Posts: 433
Location: USA

PostPosted: Thu Aug 27, 2009 18:58    Post subject: Reply with quote
There is indeed marginal improvement with the secondary antenna as I have tested a year ago. This is probably because the secondary "antenna" circuitry actually spans a good part of the board:
http://www.mylilsite.net/images/sdar430w.jpg

You can see the inverted F antenna has one line connected to the signal source (upper), while the other (lower) is connected to what appears to be the common ground. This would definitely result in the secondary antenna actually being larger than the primary/external, thus better signal.

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WRT54GL 1.1 v24 preSP2 r14896 | RNX-GX4 v24 preSP2 r14929 | 2x AR430W v24 (both bricked ATM) | 2x F*n2100 Legend Pre4.5U & v24 preSP2 r13525
Domino_55
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Joined: 15 Sep 2008
Posts: 88

PostPosted: Fri Aug 28, 2009 19:24    Post subject: Reply with quote
I tested it, but if i do the above, the signal strength will be less than 10% compared to the original (diversity disabled, rx antenna primary) setting.
I use the 15/4/09 build.
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