Originally Posted by GaryC
Initially Ch 16 and then another channel that I cant quite remember. (it will have been one selected by the
You will be aware that the CG often use Duplex working channels. Your Launch site would not
be technically able to receive you on this channel, only the CG's replies. If they could hear you on 16 but not the other channel - this is probably the reason. They might have just missed the short initial transmission on 16 too.
Otherwise, it's your wee antenna