alok said:
I had an old NRC pattern book around somewhere too and what I recall of the pattern of WPOW and WEVD ,they were similar but not exact. I remember a main lobe going NE on both patterns. If I find any other info I'll share it with you,
Don't forget that 1330 in New York was a three-way time-share for most of its life. The third station was WHAZ in Troy, which was licensed to operate from 6:00PM Mondays until 3:00AM Tuesdays, although it usually signed off at midnight on Mondays. WHAZ was ND using a "bedspring" top load and a very short vertical drop-wire. The antenna was located atop Russell Sage Laboratory, the EE building at Rensselaer Polytechnic Institute (RPI), my alma mater and WHAZ's licensee. The efficiency of the top-loaded antenna, which used the copper roof of Sage Lab as a ground, required a waiver because it could not meet normal minimums for Class III AMs, of which WHAZ was one. Anyhow, until WHAZ was sold by RPI to Alan Eaton (of United Broadcasting, owner of WPOW--ex WBBR--no relation to Bloomberg's WBBR) who converted it to a daytimer, which it remains to this day (so that WPOW could have WHAZ's Monday evening hours), other 1330s (besides WEVD and WBBR/WPOW) had to protect WHAZ at night. WCRB (AM) Waltham MA (now WRCA, Watertown MA) used a three tower array oriented along an east-west line to protect the two New York City 1330s and WHAZ.
When WHAZ became a daytimer, WCRB was able to replace its three-tower array with a two tower array oriented southwest to northeast, protecting only the New York City 1330s. When WEVD/WPOW moved to Hackensack, the New York stations' night pattern no longer sent a big signal toward Boston and WCRB (by then, WHET), which had been plagued by the huge skywave from New York, got a big reduction in its NIF.
In any event, I believe that WEVD's day pattern had main lobes pretty much to the north and south, which would be consistent with the use of two widely spaced towers on a more-or-less east-west line as reported in another post in this thread. I don't think the day pattern was much different from the night pattern. I remember listening to WEVD on a portable radio in Fahnstock State Park, which is about 50 miles north of New York City. My conclusion was that WEVD's day pattern (before use of the Staten Island site) took advantage of the protections that had to be afforded to WHAZ, which was even further north.