<div dir="auto">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.</div><div dir="auto"><br></div><div dir="auto">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. </div><div dir="auto"><br></div><div dir="auto">Mike</div><div dir="auto">G7TWC</div><div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Tue, 23 Jun 2026 at 04:32, Bob Wilson, N6TV <<a href="mailto:n6tv@arrl.net">n6tv@arrl.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Correction, that was supposed to say PING command not PINT command.</div><div><br></div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature">73,<div>Bob, N6TV</div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Jun 22, 2026 at 8:29 PM Bob Wilson, N6TV <<a href="mailto:n6tv@arrl.net" target="_blank">n6tv@arrl.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>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.<br><br>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.<br><br>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.<br></div><div><div dir="ltr" class="gmail_signature"><br></div><div class="gmail_signature">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.</div><div class="gmail_signature"><br></div><div dir="ltr" class="gmail_signature">73,<div>Bob, N6TV</div></div></div></div>
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