hello

i have a question regarding the tx power readings are they really accurate ?

i have a highpower z com card here for testing

and i get this reading of 29dbm by mikrotik os.

no country set , no regulatory domain, channel 6

the card is actually scanning for a network.

screenshot:
http://umeboshi.dyndns.org:82/zcom_txpower.gif

can this be in someway accurate ?

not unless the card can send at 29dbm!
It is not unlike routeros to be unaccurate until a link is established though.

i have noticed that on certain cards in certain configurations have their tx power varied in something that resembles a sine wave motion even when power settings is set to manual-tx power. Swapping all hardware changes nothing. I am speculating that based on the little i can find, routeros that changes the tx power. It is not unlike them to do something like that. Call it involuntary TPC? This is still speculation though.

Hebeda,
What model zcom card is that?
What does xcom say the power output is?
Is it B/G only, A/B/G, or A only?

well the informations regarding the zcom xg-622h are very conflicting. zcom china tells you on their website 100mw, zcom uk tells you in their productflyer for their costumers 500mw,on their website its 316mw and i got told by a zcomax sales person (zcom uk subsidary) that 28.2 dbi (630mw!) at 1mbps is the real maximum of the card.... whatever is true, the card has a excellent receive sensivity and some serious power ....
good 802.11bg (AR5213 BB MAC) alternative to the expensive Ubiquity cards ( half the price) ... very good for CPEs in crowded areas. my company sold a lot these cards lately

there is also a 200mw 802.11a version (Zcom xa-622h), but the sensitiy is not that good as SR5 ...

well the informations regarding the zcom xg-622h are very conflicting. zcom china tells you on their website 100mw, zcom uk tells you in their productflyer for their costumers 500mw,on their website its 316mw and i got told by a zcomax sales person (zcom uk subsidary) that 28.2 dbi (630mw!) at 1mbps is the real maximum of the card.... whatever is true, the card has a excellent receive sensivity and some serious power ....
good 802.11bg (AR5213 BB MAC) alternative to the expensive Ubiquity cards ( half the price) ... very good for CPEs in crowded areas. my company sold a lot these cards lately

there is also a 200mw 802.11a version (Zcom xa-622h), but the sensitiy is not that good as SR5 ...

Well... i googled a bit an find you're selling them as 630mW at 1mbps...
http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... 9729203925

Regards...

well the question remains , is mikrotik reading and showing the real tx power settings or not ?!

well the question remains , is mikrotik reading and showing the real tx power settings or not ?!

9 May 2006 i post this card...

http://forum.mikrotik.com/viewtopic.php?t=8309

I have a friend in the USA that buy this card from you and him tested and it said to me that it works excellent, but is not better than ubiquiti...

Best Regards!
Alessio

I have a friend who has designed and built an RF Power Meter for Wifi freq's for me.

At this stage it will only measue the Tx peak output and will not let the Rx both through, but I want to over many versions to have something that I can install at main repeater sites that will measure both peak and SWR with an RS232 to TCP/IP convertor for remote monitoring.

I will have to give him the hurry up.

He is at the calibrating side of things, but only has 1 or 10mW 5GHz Sig Gen to work with, so not sure how accurate it will be yet at 400mW?