[Elecraft] K4/0 bandwidth usage

Bob Evans k5wa at comcast.net
Wed Oct 29 19:40:17 EDT 2025


Eric,

I am definitely not the definitive word on this topic but I had the same question because the ISP at my station only has 18MB up and down.  I have a K4D and a K4/0 FieldTest unit connecting to servers at the station 60 miles from my home.  On receive, the bandwidth consumption indicator in both the K4D client and K4/0 client shows about 1 MB usage and a real tiny number for TX bandwidth.  I’ve never looked at the indicator while transmitting but I’ll bet the numbers are just reversed.  Panadapter information is not being sent while transmitting, I don’t believe, so bandwidth on TX could be much  lower than 1 MB.  I think you’ll have plenty of bandwidth unless your security cameras (or other devices) are also on the same ISP.  The K4/0 is just a very pretty (and portable) package and firmware is going through intense testing right now to get it ready for general release.  It is really amazing.

Good luck,

Bob K5WA

> On Oct 29, 2025, at 11:07 AM, elecraft-request at mailman.qth.net wrote:
> 
> paying
> much attention.? But now I have fiber there at 300-500Mbps, and the
> possibilities are blowing my senile mind...
> Thanks and
> 
> 73,
> 
> Eric NF6S



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