[WT-support] SOLVED -- Win-Test Networking over a mesh Network

[Michael Ruttenberg]

Subnet mask 255.255.252.0 restricts the traffic massively, to only 1 IP
address. It must be changed to 255.255.255.0 to work. Normally things a
setting in the router.

I had to help out M0MDS with this exact same issue recently, where his 5G
router had that setting and it stopped WinTest HQ version from seeing other
stations. Changing the subnet mask range fixed it.

Mike
G7TWC

On Tue, 23 Jun 2026 at 04:32, Bob Wilson, N6TV <n6tv at arrl.net> wrote:

> Correction, that was supposed to say PING command not PINT command.
>
> 73,
> Bob, N6TV
>
>
> On Mon, Jun 22, 2026 at 8:29 PM Bob Wilson, N6TV <n6tv at arrl.net> wrote:
>
>> I just helped a fellow contester who was struggling to get a Win-Test
>> network to work again, after he had just "upgraded' his house to a mesh
>> network to get more WiFi range for new security cameras.
>>
>> But both PCs were on WIRED Ethernet.  The IP addresses of the two
>> Win-Test PCs were 192.168.4.xxx and 192.168.4.yyy (where xxx and yyy are
>> numeric values I can't remember).  The PINT command between the two PCs
>> worked fine, but the Win-Test network did NOT work at all, no Gab, no QSOs,
>> no wtDxTelnet spots.
>>
>> The IPCONFIG command revealed that this particular mesh network by
>> default had the Subnet Mask set to 255.255.252.0 instead of the typical
>> 255.255.255.0.  So, instead of using the "normal" UDP broadcast address
>> that Win-Test calculates for you (192.168.4.255), I had to tell Win-Test to
>> use 192.168.7.255.  I needed help from AI to calculate the proper UDP
>> broadcast address for a LAN with a netmask of 255.255.252.0.  Fortunately,
>> it gave me the right answer.
>>
>> Perhaps Win-Test can look at the current Netmask as well as the current
>> IP address so that the "Default" button on the Win-Test Interface
>> Configuration screen can do all the work for you.
>>
>> 73,
>> Bob, N6TV
>>
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