[WT-support] BAND MAP ISSUE

[Bob Wilson, N6TV]

In addition to having the same broadcast address, all computers must be on
the same subnet.  That means if some of your computers have a local wired
IP address of 192.168.0.*xx* and others have a WiFi address of 192.168.1.
*xx*, (third number in address is different), some (or all) of the
broadcast packets won't make it from one to the other, no matter what you
enter as the broadcast address.  Some routers are configured to assign
separate subnets for WiFi and Wired.   Some routers are configured to block
WiFi packets from reaching Ethernet ports.  Check the security settings on
the router.

Another possibility is that you're having a lot of WiFi collisions or
dropped packets due to interference (use 5 GHz WiFi instead of 2.4 GHz WiFi
if available).  See

http://www.pcworld.com/article/227973/six_things_that_block_your_wifi_and_how_to_fix_them.html


Finally make sure that you don't have two Ethernet adapters, or one WiFi,
one Ethernet enabled on the same computer at the same time, as broadcast
packets could be generated by both at the same time, perhaps colliding.
 100% wired is best.

Disable WiFi via the hardware switch located on the side of many modern
notebooks if you can use 100% wired.

73,
Bob, N6TV

On Tue, May 12, 2015 at 2:47 PM, Don Beattie <g3ozf at btinternet.com> wrote:

> I wonder if anyone can suggest where I might look to fix the following
> issue.
>
> I have upgraded to WT 4.16 and most everything is fine. I have three
> computers on a little network for the M2 entry we will do in CQWPX at G5W.
> Two are connected to the FT5000’s, the third is connected to the web via
> wifi, and simply runs WT-DX Telnet. (I have Telnet on a separate computer
> in CW contests to avoid any issue of slowing the CW sending from the
> computer).
>
> All the broadcast addresses are properly set, as are the station names,
> etc etc. Logging works fine, as does gab. The problem is the band-map.
>
> On one of the workstations, the band map works fine – everything that
> appears on WTDX Telnet appears in the band map. On the second station, it’s
> not so good. I get about 50% of the spots appearing in the band map. I’ve
> checked the band-map settings (properties and display) and they are
> identical on both computers. It suggests that it is a network problem, but
> everything is OK with the network adaptor settings. I have checked to see
> what registers on the DX cluster window in WT at each station, and the same
> callsigns are missing from the one station as are missing in the band map,
> whereas the other workstation call list aligns exactly with WTDX Telnet
> callsign list on the telnet server machine. So two machines are working
> perfectly together, whilst the third seems to take only 50% of the spots.
>
> Has anyone seen this problem before and can point me in the right
> direction?
>
> 73
>
> *Don, G3BJ*
>
>
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