have FOR SALE FS Heathkit HD-1418 active audio filter, manual---------------$50 god condition & working.il pay for shipping. tnx dennis 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"