In my opinion, it is foolish to get advice on this question, from this forum. EACH TV station, or cable station, has seperate delivery requirements. Some accept analog Beta tapes, some expect a Sony SRW HD tape delivery (like Discovery). Some require that audio be checked on the Dolby LM100 digital audio meter. Most require that you have expensive waveform monitor/vectorscopes to check your levels. General answers from this forum will not give you the SPECIFIC answers that you need for delivery requirements. You risk having your tapes rejected by a TV station unless you get the document from that station, that states exactly what they expect from you. Stations like PBS and Discovery have long delivery requirement documents.
Bob Zelin