Subject says it all. Prefer the HDP-21 as have the documentation for it but any would be welcome. 73, Denny--WB7EGG/6 Sponsored by the City of Tempe Listserver Submissions: heath at listserv.tempe.gov Listserver Subscription: listserv at listserv.tempe.gov - "subscribe heath 'name' 'call'" Listserver Unsubscribe: listserv at listserv.tempe.gov - -"signoff heath"