Ticket #665 (closed defect: invalid)

Opened 6 years ago

Last modified 5 years ago

txpower problem Senao NMP-8602 ETSI

Reported by: tprzybysz@o2.pl Assigned to:
Priority: major Milestone: version 0.9.x - progressive release candidate phase
Component: madwifi: HAL Version:
Keywords: txpower Cc:
Patch is attached: 0 Pending:

Description

Hi all ! I have a problem with correctly setting up power on card: Senao NMP-8602 ETSI. I cannot set more than 19dbm on B,G band, and more than 17dbm on A band. Look at producer site product datasheet: http://www.senao.com/english/product/driverdb/000169304/NMP-8602-Datasheet_02062006__Industrial.pdf . In ETSI avaliable output power is 20dbm on all bands !? I use countrycode 616 (POLAND). Regulation from site: http://www.nuclearcat.com/athmap.txt is not true, because in Poland limit for 2.4GHz is 20dbm (100mW), and for 5GHz 200mW indoor, and 1000mW outdoor. All power values in EIRP. http://www.tp-ir.pl/files_s/pl/urzadzenia_radiowe_do_uzytku_bez_zezwolenia060902.pdf - at this link is Polish law regulation (on site 5 only in Polish :) ).

madwifi-ng-r1619

Best Regards Tomasz Przybysz

Attachments

Change History

06/06/06 14:36:25 changed by mrenzmann

  • owner deleted.

Tickets should not be assigned when reporting an issue.

The linked data sheet resulted in a 404.

06/06/06 21:43:52 changed by tprzybysz@o2.pl

here is corect link to product http://www.senao.com/english/product/product_wireless01_outdoor_1.asp?pgtl=Wireless&tp1id=02&tp2id=09&proid=000169 and datasheet: http://www.senao.com/english/product/product_load_w.asp?httptp=2&proid=000169. Sorry for mistake.

06/15/06 00:27:35 changed by anonymous

Hello! I have the same card. I think this problem is caused by the card. (You can easyly remove the software limitations from the source code, the card itself dose not contain any limits /all risk and responsibility is yours/).

06/28/06 04:21:48 changed by anonymous

Please elaborate on removing the limitations. doesn't the hal enforce some txpower limits?

Thanks...

06/28/06 05:16:07 changed by mrenzmann

Please check the explanations given in #194 and UserDocs/Ubiquiti#PowersettingforUbiquitiSR2, regarding how Ubiquiti implements the higher TX power. The same tricks might be used by Senao.

In addition, ETSI has some rules regarding the spectral power, which requires devices working with one of the OFDM modulations (used for 54, 48 and 36 MBit IIRC) to limit TX power to 19dBm instead of 20.

I wonder what a patch would look like that removes "the software limitations from source code" as mentioned by anonymous at 06/15/06 00:27:35... the TX power limitation is implemented in the HAL, not in the driver source, and the HAL also takes care to prevent "clever hackers" to use TX power values that are not within what the HAL believes to be allowed in the configured regulation domain.

07/17/07 14:52:37 changed by mtaylor

  • status changed from new to closed.
  • resolution set to invalid.

This is a support issue and not a bug. Support issues are handled on the #madwifi support channel.

Add/Change #665 (txpower problem Senao NMP-8602 ETSI)