This is a problem about linking a DV Mega to a D-Star repeater, and hearing all members presently using that repeater.
First, the link is established between the DV Mega and D-Star repeater by my radio via RF with UR = RPTCALLCL. Then my radio's UR is switched to CQCQCQ on the DV Mega frequency. At this point, some members may be heard, but not all.
Nearly all the members have ID-51 radios, and I have discovered that the ones who are audible thru the Mega have turned on "Use Reflector". Those inaudible via the DV Mega have not.
Obviously it would be much better if members did not have to be reminded to make the setting "Use Reflector" for the benefit of just one person with a hotspot. Invariably "Use Reflector" setting is not the default for most hams.
Is there another way to link the DV Mega to the repeater that would not require these shenanigans?
Some hotspot images, like most repeaters, require the RPT2 be set to the gateway (i.e. "RPTCALL G") to permit traffic to be routed out to a reflector or repeater via the gateway. I believe that the "use reflector" setting on the later radios does that. Another option is to set the radio to duplex with a zero offset and manually program the gateway into RPT2. If the radio is in simplex mode, RPT1 and RPT2 are not transmitted in the header no matter what is set in the radio. With the older radios (ID80/91/92 and IC-880/2820) this poorly-documented (by Icom) workaround is needed when using a repeater/hotspot that requires a gateway setting in RPT2.
DStar Commander will forward traffic to a linked repeater/reflector regardless of the RPT2 setting, so simplex mode on the radio works fine. I think the FreeStar images require the RPT2 be set. Not sure about the others.
Thanks very much for the rapid reply, and options. Also, the explanations are especially appreciated since sometimes one hears "press the button marked fill-in-the-blank" and unfortunately there is often no "why" behind it. I will try your thoughts and report back.