DSN=BPLms4		Rochester, MN BPL S Meter measurements on Icom 706 MK IIG						7Sep04 KC0P
		Hustler Mobile antenna with resonators for each band.
		USB or LSB, 2.4KHz bandwith, AGC fast, No Preamp.
		Baseline			After Main.Net turned on
		4Ave&14th St SW			At Repeater Pole Num. 3
		Quiet	Noisy		544KBps		After Notch of Ham Bands
Freq. MHz	Band M	5-25,7-12	7-Jul		20-Jul		2-Sep	0.2 to 1 Mbps
		A	B		C		D
1.901	160				NTP<2.2		NTP
3.891	80	S2-S3	S8 frying		S7 Ticks		S7 Ticks
5.332	60	S0-	S4-S5 frying		S0 to S5 Ticks		S4 Cricket
7.251	40	S0-S2	S4-S5 frying		S9+20 Ticks		S5 Ticks
9.991	30	S5-S6	S7 frying		S9 Ticks		S5 Ticks
14.345	20	S0-S5	S0-S4 frying		S6 Ticks		S7 Cricket
18.154	17	S0	S5 frying		S0 no Ticks		S4 Ticks
21.301	15	S0	S6 frying		S4 minor Ticks		S5 tunable frying
24.961	12	S0			S0 NTP		S0 NTP
28.305	10	S0	S5 frying		S0 NTP		S0 NTP
50.131	6	S0					S0 NTP
Select Frequencies, MHz
2.501					S4 Ticks		S0 NTP
7.002					S7 to S9+30 Ticks*		S5 Ticks & Cricket
10.051							S5 Ticks
10.106							S7 Cricket
10.134					S9 to S9+20		S5 Ticks
15.001					S6 to S8		S7 Ticks
20.001							S6 Ticks
21.024							S5 Cricket every 10 seconds
	The Hustler resonators were correct for each band except:
	160 M used RM-75S, 60 M used RM-40S, 6 M used just the mast, about 54 inches.
	The frequencies recorded were for repeatability of measurements, they are typical,
	not unique. The ticks are heard all over the affected ham bands and between.
	Explanation of the situation for each of the four sets of measurements:
	A) Baseline before BPL, 25 May, 26 May, 3 June, 12 July 2004 normal quiet days.
	B) Baseline before BPL, 1 July 2004, some loud interference, frying sound across
	the bands, loudest near the overhead injection site near 12th street and 4th Ave SW.
	Had this continued, near an amateur installation, it would have been cause for
	complaint to power company for find it and fix it.
	C) Initial turn-on of BPL, about 10 customers, no notching of Ham Bands, loud ticks
	seem to be contineous from 2.7 to about 17 MHz.
	D) T1 line from Winona improved to support speeds to 1 Mbit/sec, told the Ham Bands
	have been notched, now seems to use the frequencies from 2.7 to 25 MHz.							Worst
	harmful interference seems to be in the phone portion of 80 and 40 meters and all of
	the 30 meter band, even with notching turned on. Interference increases with customer
	load and we have only measured when at most three of the ten subscribers were active.
		NTP = No Tunable Pests
		* Depends on location
		Ticks are a very fast burst and not tunable
		Cricket Chirp lasts longer than a Tick, and are tunable, seem to be
		caused by increased load.