I would like to verify the manufacturer and model number of the following Heath microphones: HDP-121 HDP-242 HDP-444 Can anyone help? Thanks! Chuck /. WA7ZZE Listserver Subscription:listserv at listserv.tempe.gov - "subscribe heath 'name' 'call'" Listserver Submissions: heath at listserv.tempe.gov Listserver Unsubscribe: listserv at listserv.tempe.gov - -"signoff heath"