[Elecraft] RS-232 over WiFi

Tue Jun 25 10:43:07 EDT 2013

well, this is a good question, if you are planning to use a "pair" of this devices one as master and one as a slave with some external omni atennas that you might get maybe 80m or so but only in LINE OF SHIGHT!!!, in normal shack conditions with wires and shields I would say maybe 10m or so. Also important the level of interference in ISM band, the modulation for BT devices is GFSK, DQPSK and DPSK, the good part is the BT protocol is designed to avoid 802.11 b/g/n/ac and can go up to 2485Mhz and at least for NA the upper freq is ch 11- 2462  as central freq so at 30dBc you'll get 2473, so there is some free sectrum room to avoid house interference from wifi equipement (in EU I think can go up to ch 14). The BT  BW is 3Mhz as far as I remember plus the protocol is close to FHSS one. However the biggest BT killer are the 2.4Ghz wireless phones, try to avoid this at home (I witched with DECT ones). Having a free of interference spectrum will
 "extend" the coverage coz the RSSI on wifi devices is not an absolute value (is a long story with wifi/BT rx calibration) and is enterily based on SNR, if there is an interference the BT device will "report" a lower RSSI and will decrease the modulation scheme. In my HF shack I had no problems with HF interference (no wonder the spectrum is faar away) consider mounting this gizmos with external antenna in a pair config and do not relay on internal computer BT card....my two cents

vy 73 de VE3GNO Daniel

From: Poul Erik Karlshøj (PKA) <PKA at telepost.gl>
To: VE3GNO Daniel <yo3gjc at yahoo.com>; "elecraft at mailman.qth.net" <elecraft at mailman.qth.net> 
Sent: Tuesday, June 25, 2013 10:04:59 AM
Subject: SV: [Elecraft] RS-232 over WiFi

Hi Daniel
That's an interesting solution too and cheaper than the WiFi units.
Do you know what would be the range using a Lenovo notebook (the adaptor should be OK for 100m according to the spec., but I don't know about the notebook)?
73/OZ4UN
Poul-Erik

-----Oprindelig meddelelse-----
Fra: elecraft-bounces at mailman.qth.net [mailto:elecraft-bounces at mailman.qth.net] På vegne af VE3GNO Daniel
Sendt: 25. juni 2013 15:48
Til: elecraft at mailman.qth.net
Emne: Re: [Elecraft] RS-232 over WiFi

I was thinking at this one
http://www.ebay.ca/itm/221236298021?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649#ht_2256wt_701

there are cheaper solutions on ebay but I am not sure if can handle RTS and CTS.

vy 73 de VE3GNO Daniel

________________________________
From: ab2tc <ab2tc at arrl.net>
To: elecraft at mailman.qth.net 
Sent: Tuesday, June 25, 2013 9:39:32 AM
Subject: Re: [Elecraft] RS-232 over WiFi

Hi,,

Works great for what? That's an Ethernet to Wi-Fi adapter. What's needed is
an RS232 to WiFi adapter.

AB2TC - Knut

Paul A DeFelice wrote
> I purchased a  refurbished NETGEAR WNCE2001-100NAR from Newegg.com.  Works
> great.
> 
> 
> 73,
> 
> 
> Paul K9NU
> 
> 
>  
> 
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