RF Modulator Questions

[Electronic M]

Zeno reminds me of a good point. A lot of tube era sets (except Zenith), and especially cheaper ones lacked provisions for adjacent channel rejection and often didn't handle adjacent channels well. As a standard practice I do not use or recommend any 2 adjacent channels with vacuum tube sets (except 6-7 and 13-14 since there's large swathes of non-TV spectrum between those channels). Adjacent DTV channels can sometimes interfere too. DTV5 here tends to mess with CH6 so I haven't been using 6 despite wanting to.

If you happen to collect newer VCRs and like keeping them with the TVs, most VCRs have tuners designed to handle adjacent channels and could be used as a tuner.

But as a general rule if it isn't cable ready it probably won't like adjacent channels as much as a cable ready set will.