so i've been messing with Winlink Express for about two weeks now and i finally got it to connect and send a test message to myself but im still pretty fuzzy on how the whole gateway selection thing actually works in practice

like i understand conceptually that theres RMS stations you connect through and they relay to the internet and then to the recipients email, but when i open the channel selector it shows me like 20 stations some with good SNR some with garbage and i just kind of pick one that looks okay and hope for the best. is that really how people do it or is there a smarter way to pick

also i set up my Vara FM and its running on a 2m connection to a local gateway thats maybe 30 miles away, works fine most of the time, but i tried the HF side (Vara HF) and i get connected but then the session just drops mid-transfer like 40% of the time. not sure if thats a propagation thing or something with my settings. running an IC-7300 and i have the audio levels set per the setup guide i found somewhere, ALC barely moving

any tips from people who actually use this regularly would be great, especially for the HF reliability issue

the channel selector thing — yeah most people just sort by distance or SNR and pick the top few, theres not really a magic formula. what i do is sort by distance first since a closer gateway usually means a cleaner path even if the SNR reading looks middling. the SNR numbers in the selector are based on beacon decodes so they're a snapshot not a live reading anyway

for your HF drops with Vara HF that ALC barely moving thing is actually good, you dont want ALC working at all on digital modes, it means your audio drive is in the right range. but id double check your ICC-7300 DATA MOD setting is set to USB-D and not just USB, and make sure the twin peak audio thing in Vara is calibrated. also check if the gateway youre hitting has good propagation at the time — some of the public RMS HF gateways get hammered during certain hours and will drop sessions if the channel gets busy. try connecting at off peak times and see if your completion rate goes up

also worth trying a couple different RMS HF gateways, some are definitely more stable than others depending on where they are and what antenna setup they're running

the 40% drop rate on HF vara honestly sounds like propagation to me more than settings, especially if VHF is running clean. what frequencies you trying? some of the 40m gateways i use are rock solid in the evenings but in the afternoon forget it. also have you looked at the Winlink maps site to see which RMS stations are actually active and when, its pretty useful for figuring out whos actually online vs just listed