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Wireless router antenna pattern (DPQ3925)
I have the Cisco DPQ3925 router/gateway and noticed that the wireless coverage in my townhouse varies considerably. Does anyone have an idea how the built-in antennae are oriented and what the shape of the covered space is? It seems that the signal at the top is much stronger that at the bottom. Could anyone confirm?
Thanks.
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Accepted Solution
DerrickW
Valued Contributor
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1.2K Messages
Hi IamOK,
I was unable to locate a diagram that actually shows the location and/or position of the antenna in the gateway. To get the best performance out of the router wireless signal you want to make sure it is not inside of a cabinet or an enclosed space. Open areas always work best. Another suggestion would be a signal booster for the parts of the house that are having trouble picking up the signal. Environment is a really big part, walls and floors take away from wireless range. Appliances and other electronics may interfere with the wireless signal as well. Changing the channel on the wireless router could also help with the issue that you are having.
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IamOK
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Thanks for checking into this. I noticed that the transmitted power varies substantially if I check above (best), below (second best) and around the sides (worst) of the router. Given that I live in a town house I will, therefore, preferably place the router on the lowest floor (or upside down on the top floor).
All your suggestions are valid, thanks. BTW: I found a channel which was least used in order to minimize interference with other transmitters around me, most of which uses the standard settings (channel 1, 6, 11).
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Trikein
Contributor III
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806 Messages
Do you happen to have the FCCID for the DPQ3925? Should be printed on the box or sticker on the bottom. I tried to google it but couldn't find it either. I think maybe it just incorporate DPQ3825, so i can look up the public testing data which should say where the internal antenna are. I think you will be surprised how small they are. That isn't a knock against the gateway, I was just always surprised how small and cheap the inside of a lot of good routers are.
Also, a good program to use on the laptop is inSSIDer. Free and super easy. Shows you all the wireless networks around you on a graph sorted by mode,frequency,channel,signal strength, etc. You can even use it to find dead spots and interference (kind of) by moving the laptop around and usings its internal wireless adapter to read the dBi of signal and honing in on trouble spots. No 900$ RF spectrum analyzer required. :-)
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IamOK
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Thanks. I do not see the FCC ID on the device nor on the box, just MAC and SSID/key.
I would be interested in the DPQ3825 info you have. the "39" seems to add phone functionality to the "38" but seems otherwise to be the same.
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Trikein
Contributor III
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806 Messages
I can't find the FCCID for any of the DPQ line. Hmmph Maybe they are "self certified". Here is the Netgear gateway. I see two antenna, and 2.4ghz only so that means it must max at N300. No NIMO.
https://apps.fcc.gov/oetcf/eas/reports/ViewExhibitReport.cfm?mode=Exhibits&RequestTimeout=500&calledFromFrame=N&application_id=504496&fcc_id=PY309300119
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