http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MESELX:IT&item=220287500895 HP 3586B and 3336B combo. SLM and matching Level Generator. 50Hz to 30Mhz -- Chris N8PHU ET1(SW) USN (Ret) Chief transmitter Heavy SES-Americom