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Broadband-Hamnet™ Forum :: Firmware |
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Subject :Power Setting..
2012-03-24- 08:01:55
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| W1YX |
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Joined: 2012-03-12- 21:41:42
Posts: 3
Location: Macedon, NY |
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Current firmware does not appear to support adjusting the power level. I have a WRT54G v2.2 that I loaded with Tomato and that software gave me the ability to adjust the power level all the way up to 1.5W. Of course I kept it to .75W so as not to overheat it. Are there plans for (or possibly already available) a way to adjust the power level of the WRT54G under HSMM-MESH? Brad. |
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Subject :Re:Power Setting..
2012-03-24- 16:38:55
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| K5KTF |
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Joined: 2010-01-18- 23:04:04
Posts: 266
Location: 5' from this webserver |
  
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Hi Brad,
If you go to SETUP and login, on the main screen (in the ACTIVE SETTINGS category, under the RX ANTENNA and the TX ANTENNA settings (by default =Diversity)), it shows TX POWER, and by default is set to max 19dBm, or 79mW. You CAN crank it down from there if need be (like when driving an amp, you should take it down under 5dBm to keeps the spurs and spokes from happening).
KTF
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 Jim K5KTF EM10bm Cedar Park, TX  |
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Subject :Re:Power Setting..
2012-03-24- 20:20:19
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| W1YX |
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Joined: 2012-03-12- 21:41:42
Posts: 3
Location: Macedon, NY |
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Thanks, and thanks for not pointing out my obvious error - I meant of course 150mW and 75mW, at least that is what the firmware claimed. |
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Subject :Re:Power Setting..
2013-02-16- 09:37:07
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| kf7bws |
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Joined: 2011-10-28- 14:57:45
Posts: 13
Location: Keizer, Oregon CN84lx |
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For my HSMM nodes I have been using DD-WRT which will let me set the power setting to 250mW. 250mW comes out to about 23dBm. The your HSMM-Mesh firmware allows for a max or 19dBm wich is about 79 mW. This limits the distance between Mesh nodes using any omni antenna. I am using on all my routers a 9dBi colinear antenna.
HOW do I boost it further; to 250 mW at the console prompt.?
Wes Larson
KF7BWS
wes@kf7bws.info
CN84lx |
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Subject :Re:Power Setting..
2013-02-20- 17:15:30
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| K5KTF |
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Joined: 2010-01-18- 23:04:04
Posts: 266
Location: 5' from this webserver |
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Wes, quick questions.... Have you put the node on any analyzing equipment when you crank it up that high? Im curious if it really does go that high, and if it does actually go over 79mW, what kind of signals are coming out? From what I have heard who did hook it up to quarter-million dollar gear (way above my pay scale), it started to get really gnarly RF (spurs n such) above a certain point. Plus I remember something about radio life being shortened. From what I understand, and I have been wrong a time or two before (just ask the wife...All men make mistakes--Married men just find out sooner), 19dBm/79mW is the RATED spec for the WRT radios. I have seen where others using other FW have cranked it up, but it would only be good for testing with limited longevity. Im not trying to be an ass or facetious, just sincerely curious as to your results. Thanks, Jim
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Jim K5KTF EM10bm Cedar Park, TX |
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Subject :Re:Power Setting..
2013-02-21- 05:59:30
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| kf7bws |
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Joined: 2011-10-28- 14:57:45
Posts: 13
Location: Keizer, Oregon CN84lx |
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Jim
79mW is the factory default power level and with the Linksys firmware it can not be changed. With dd-WRT the power levels can be changed in mW rating to 251mW. With dd-WRT the max output varies with model of router.
I do not have any equipment to test it properly. I do have WiFi Analyzer on my android phone and the power levels do indicate a reasonable difference. I have ran several WRT54G-TMs months on end at the higher levels with no ill effects. They are however heat sinked. |
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Subject :Re:Power Setting..
2013-02-21- 09:04:40
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| WN8U |
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Joined: 2012-10-23- 15:33:21
Posts: 4
Location: Cincinnati, OH |
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Hi Wes, can you kindly detail what "higher levels" mean?
Very curious as to what reasonable levels these nodes can be pushed to. |
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Subject :Re:Power Setting..
2013-03-02- 09:37:51
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| kf7bws |
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Joined: 2011-10-28- 14:57:45
Posts: 13
Location: Keizer, Oregon CN84lx |
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From the factory the WRT54-g?s transmitter poer is set for 79mW or 19dBm. Why? I dont know, maybe some thing to do with Part 15 of the FCC rules.
If you replace the factory firmware with DD-WRT firmware you may change the transmitter power setting from 0 Watts - .250 Watts. This would corespond to 0dBm - 23dBm.
With the HSMM-MESH firmware the options for transmitter power are 0dBm - 19dBm. |
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Subject :Re:Power Setting..
2013-03-02- 09:53:05
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| kf7bws |
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Joined: 2011-10-28- 14:57:45
Posts: 13
Location: Keizer, Oregon CN84lx |
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FYI: I have run the transmitter at 250mW (.25W, 23dBM) for months with no apperant effects. The processor chip did have a heatsink. |
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Subject :Re:Power Setting..
2013-07-06- 07:06:45
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| VE3RRD |
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Joined: 2013-06-19- 16:54:27
Posts: 44
Location: Barrie, Ontario |
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I too would like to increase the power of my WRT54GL slightly to +21 dbm or about 125 mw. I remember reading someone's test results that showed at +21 dbm, the router still produced a clean output signal with no overheating problems.
Is there any way of entering the command line level of the HSMM-Mesh/Linux firmware to read and set the output power of the router? |
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AL - VE3RRD
http://barrie-wax-group.dyndns.org
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Subject :Re:Power Setting..
2013-08-20- 03:47:45
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| KK6EOO |
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Joined: 2013-08-18- 10:38:04
Posts: 3
Location: |
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79mW keeps the radio legal under Part 15 when end users attach the Cisco 9dbm omni antenna. Omni directional power has to be under 1W EIRP. |
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