so ive been trying to get Winlink running for a few weeks now and i finally got Winlink Express installed and connected to a couple of gateways but the connection keeps dropping mid-transfer and i cant figure out if its my setup or the gateway itself. im running a IC-7300 into a Signalink USB, using Vara HF which i bought the license for. the connection will start fine, ill see the handshake go through and start pulling down messages then somewhere around 60-70% of the transfer it just dies. the gateway shows busy or drops off the list entirely.

ive tried a few different gateways, some closer some further away, and same thing happens on most of them. one gateway i connected to in texas (im in the midwest) actually completed a full session which was great, but then i tried it again the next day and it dropped again. im wondering if my audio levels are off or if theres something wrong with how im configuring the soundcard. the Signalink tuning is something i never fully understood honestly. also not sure if i should be running Vara FM instead for local stuff since theres a few VHF gateways maybe 40 miles away.

any ideas would be helpful, this has been bugging me for a while and i want to get it reliable before our ARES group starts using it for emcomm exercises

the signalink levels are almost always the culprit when i see this kind of thing described. you want your transmit audio set so youre driving the radio but not splattering all over. with vara HF specifically ive found that running the radio at like 40-50 watts max and keeping the signalink TX knob around the 9-10 oclock position works pretty well, but you really need to watch the ALC meter on the 7300 -- if its moving much at all youre probably overdriving it and vara absolutely hates that. the modulation goes all wobbly and the gateway just gives up on you.

also check that youre not running any processing on the 7300. data mode should have speech processor off, TX monitor off, all that stuff. the 7300 has a USB audio interface built in btw, you might actually get better results ditching the signalink and going direct USB -- one less piece of gear in the chain and the 7300s built in codec is pretty decent for digital stuff. as for vara FM on vhf, yeah absolutely try it if you have gateways in range. 40 miles should be workable with a decent antenna, and vhf sessions tend to be way more reliable for short messages.

yeah what he said about the ALC is spot on. i went through the exact same thing when i first set up winlink and spent like two weeks thinking it was the gateways being flaky when the whole time i was just cooking my audio. one thing i'll add -- in vara HF settings there's a bandwidth setting and if youre on a busy band and you've got it set to 2300hz you might be stepping on other signals or getting interference that kills the session. dropping to 500hz is slower but way more reliable when conditions are marginal.

also the gateway showing busy isnt necessarily your fault, some of the popular RMS gateways only handle one session at a time and if someone else connects right when youre mid-transfer it can be weird. the propagation checker in winlink express is actually pretty useful for finding gateways that are likely to have a clear path at that time of day. takes a minute to learn but worth it.