Barry and others,
I have been following the discussion and want to add the description of a problem and its solution that I encountered with my remote operation. My set-up: Control site: Manhattan, New York; k3/0 mini to RemoteRig with wireless to WiFi router to Cable ISP (ping 10ms; 15Mbps forward; 1Mbps return); more than 25 strong WiFi networks in range Radio site: Town of Clinton, NY (rural); K3/100 to RemoteRig with wireless to WiFi router to cable ISP (ping 16ms; 55Mbps forward; 25Mbps return); only my own WiFi Network in range Parameter settings: All settings of the RemoteRig and Elecraft equipment at both ends were without any exception at the values recommended by Microbit and Elecraft in the manuals Problem: Dropped packets resulting 0.1 - 1 sec audio drop outs both ways and messed up CW; worse during business busy hour (5 - 6 pm) and at night from 8 - 11pm Solution: The problem is clearly not caused by line speed or ping time. At first I though the problem might be congestion at the cable node in the City (400+ business and residential users on the fiber fed node), but the cable company convinced me with tests that I witnessed that this was not the issue. Then I talked to some folks about WiFi issues. What I learned is that most WiFi equipment as-delivered is set for channel 6 as default and most users leave it there. I checked my router in the City and found it was on channel 6. I changed my router to channel 8 and the dropped packet problem completely disappeared and CW is just fine. So the problem appears to have been something we hams are all familiar with - QRM. My suggestion is, if you are having a dropped packet problem and are using WiFi in a dense WiFi environment as part of your remote system, try changing your router WiFi channel as a first very easy step to solving the problem. 73, Buzz W3EMD Message: 9 Date: Sun, 13 Jul 2014 18:36:27 -0700 (PDT) From: Barry <[email protected]> To: [email protected] Subject: [Elecraft] How reliable an internet connection is needed for A K3 remote to work well? Message-ID: <[email protected]> Content-Type: text/plain; charset=us-ascii A while back we tried Remoterig with a Kenwood radio and the CW generated was poor on the other end. This was presumably from dropped packets and or latency issues (Comcast on one end and a terrestrial microwave connection on the other end). Some dits/dahs were lost and others were prolonged, due to the lost stop signal. My understanding of the remoterig protocol for CW is it's not very robust, with no error correction or ACKing. We got around the CW problem by using a VNC and the CW is generated at the host end within the VNC window, using N1MM, directly keying the radio. If we were to use a K3 and K3/remote for the radio, would there be potential radio control issues due to the flaky internet connection, or is there redundancy and/or error correction built into the Elecraft remote protocol? Barry W2UP ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
