My EL-1 struggles to keep the link with my v2 transmitter in my apartment. I've read a thread that this is likely due to Wi-Fi. I've found I can keep link for the longest on channel 8.
Anyhow, as unfortunate as that is, it seems almost more worrisome that the transmitter doesn't realize the link has been lost. While the EL-1 green link light turns off when the link has been lost, the transmitter's green light remains on. That light is supposed to assure the photographer that "everything is all good, keep on going with the shoot." This is a real bummer to not be able to rely on the transmitter link light to know when things have gone south.
Hopefully Canon can release firmware that addresses both the link loss issue (cheaper setups don't have this problem with wifi) and the transmitter false link light issue.
