[Elecraft] Ethernet serial servers... Re: USB to serial angst

[Matt Zilmer]

Because of the buffering done on the input side, most Enet - Serial
adapters have worse basic transfer rates than USB adapters have.
Datagrams may have only 10-12 characters in the payload.  

Try your unit with PortMon, and you'll see what I mean.

The buffering of single characters also causes some latency issues,
but the K3 is OK with these.  

The effect for remote control is very hard to see, but if you're using
one of these adapters to reload firmware, you WILL see the lower
transfer rate add up to a longer reload time.

I've been using the B&B ES1A on and off for several years with K3 #24.

73,
matt W6NIA

On Tue, 16 Mar 2010 07:13:45 -0400, you wrote:

>Tom,
>
>Those show promise.  Keep us posted on the results of your experiments.
>What about latency?  Does it work with QSK CW?  How to handle the audio 
>channel? 
>
>To successfully work with existing applications, they would have to be 
>addressable as a com port to any computer on the network.
>
>Since those adapters are for industrial applications rather than 
>consumer, I would expect them to be less 'flaky'.  That goes for the USB 
>to serial adapters for industrial use as well - I noted that NetEon has 
>industrial USB to RS-232 adapters too.
>
>73,
>Don W3FPR
>
>Tom Azlin N4ZPT wrote:
>> Hi Don,
>>
>> Several of us are playing with Ethernet hosted serial servers that plug 
>> into a router and have a one or more serial connectors. Put the serial 
>> server at a remote site like a repeater site with internet then run 
>> redirecter software on your local computer. Poof, you have one or more 
>> serial ports tunneled across the Internet. No computer needed at the far 
>> end. We have two different brands with two serial ports. Planning to 
>> connect a TNC and a repeater controller this way.
>>
>> http://www.neteon.net/Category/340-3/Serial-to-Ethernet is one
>> http://www.opengear.com/product-acm5000.html
>> http://www.lantronix.com/device-networking/external-device-servers/uds2100.html
>>
>> Is this what you mean by a plain Ethernet to serial converter?
>>
>> 73, Tom n4zpt
>>   
>>
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