[Elecraft] How reliable an internet connection is needed for a K3 remote to work well?

[Matt Zilmer]

Suggest you find the EAxxxx menu that allows you to optimize SIP
and/or VoIP performance.  It is here on this EA9600 somewhere.  I
think all the higher-end Linksys routers have this setting.

Most remote audio uses SIP for call setup and one of several ULPs for
voice VoIP.  RTP is one of them.  Brandon at Elecraft knows a lot
about all this, and may be able to give more detailed advice.

73,
matt W6NIA

On Thu, 24 Jul 2014 21:40:05 -0700, you wrote:

>I have almost identical symptoms - brief audio dropouts, sometimes
>solitary, sometimes many and frequent, rendering the remote setup unusable.
>However, I'm NOT using WiFi connectivity between the RRC and the router. My
>RRC connects directly to my Cisco/Linksys EA4500 router with a short RJ45
>cable. Are there other settings in the router that might provoke similar
>symptoms? I should have ample bandwidth on my cable TV Internet connection
>- typically 20-30 Mb down, 1-2 Mb up, 20-40 ms ping.
>
>Any thoughts?
>
>Thanks & 73,
>
>/Rick N6XI
>
>
>On Wed, Jul 16, 2014 at 1:51 PM, James Beitchman <jbeitchman at jgbconsult.com>
>wrote:
>
>> 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 <w2up at comcast.net>
>>
>> To: elecraft at mailman.qth.net
>>
>> Subject: [Elecraft] How reliable an internet connection is needed for
>>
>>      A K3 remote to work well?
>>
>> Message-ID: <1405301787274-7591154.post at n2.nabble.com>
>>
>> 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
>>
>>
>>
>>
>>
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Matt Zilmer, W6NIA
www.elecraft.com
831-763-4211  x129