[Noisebridge-discuss] Radio FCC says no freqs available in SF unless use special considerations - Re: Frequency Survey.

giovanni_re john_re at fastmail.us
Mon Oct 21 02:59:57 UTC 2013


On Sun, Oct 20, 2013, at 06:25 PM, Norman Bradley wrote:
> A couple of weeks ago I distributed some FM Radio Frequency Survey 
> sheets. We are getting down to crunch time and I need the information 
> for our filing. If you have done a survey please send me a message 
> telling me where you were (pryankster at gmail.com). Currently I only 
> have data from Telegraph Hill. I will collect the completed sheets at 
> the Tuesday meeting.
> 
> I'm trying to avoid duplicating work but if I don't hear about a hill 
> top being visited I'll need to spend most of Tuesday bouncing around the 
> City.


Norman, what do you conclude about the below info:

Summary:  FCC search says no channels available under current rules,
3 channels available but only with not yet implemented rules.

Thoughts???


Using Sutro tower centeral to SF coordinates:
Latitude, Longitude: 37° 45' 19", 122 26' 6"



=====  1) FAIL - No channels available
http://transition.fcc.gov/fcc-bin/lpfm_channel_finder?dlat=37&mlat=45&slat=19&dlon=122&mlon=26&slon=6&detail=0&x2nd=0&xif=0
"
Sun Oct 20 22:41:19 2013
Input options:
INCLUDES second-adjacent channel spacings INCLUDES intermediate
frequency (I.F.) spacings

Latitude, Longitude: 37° 45' 19", 122 26' 6"

Google Map: 5.6 km radius (approximate 60 dBu service contour coverage)

FAIL. The requested latitude and longitude do not meet the LPFM spacing
requirements on ANY channel. In addition, there are no LP100 channels
available anywhere within 10 kilometers ( 6 miles).
"
Sutro tower



=====  2)  3channels possibly available, but only with " These proposed
spacing rules are not yet in effect."
http://transition.fcc.gov/fcc-bin/lpfm_channel_finder?dlat=37&mlat=45&slat=19&dlon=122&mlon=26&slon=6&detail=0&x2nd=1&xif=1

"
Special search options:

Second adjacent channels: An LPFM application must satisfy minimum
distance separation requirements to stations operatingon and
applications proposing operations on second-adjacent channels. The Local
Community Radio Act authorizes the Commission to waive
thesecond-adjacent channel protection requirement and the Commission has
under consideration proposed waiver standards.

Include (more restrictive) Exclude Second-adjacent channel distance
separation requirements to authorized stations and pending applications

Intermediate Frequency (I.F.) channels: An LPFM application must satisfy
minimum distance separation requirements to stations operatingon and
applications proposing operations on intermediate frequency (IF)
channels. The Commission has under considerationa proposalto
eliminatethisrequirementforLPFM applications proposing operations at
less than 100 watts effective radiated power.

Include (more restrictive) Exclude I.F. channel distance separation
requirements to authorized stations and pending applications
"


"
Sun Oct 20 22:46:57 2013
Input options:
EXCLUDES second-adjacent channel spacings EXCLUDES intermediate
frequency (I.F.) spacings

Latitude, Longitude: 37° 45' 19", 122 26' 6"

Google Map: 5.6 km radius (approximate 60 dBu service contour coverage)



CONDITIONAL. The requested latitude and longitude meet the PROPOSED LPFM
spacing requirements for one or more second adjacent and/or intermediate
frequency (I.F.) channels.

These proposed spacing rules are not yet in effect.

Channels Available for LPFM LP100 Stations [Channels 201 to 300,
corresponding to 88.1 to 107.9 MHz]

Channel 241 ---- 96.1 MHz 
Channel 245 ---- 96.9 MHz 
Channel 273 ---- 102.5 MHz


This analysis does not determine whether an LPFM station at this
location and channel might receive interference within its 60 dBu LPFM
service contour from FM broadcast stations already operating or
authorized in the band from fully spaced locations. LPFM stations must
accept all such interference.


Because the FM database constantly changes, there is no guarantee that
channels represented as "available" will be technically acceptable at
the time of application filing.

Available Channels Interference Analysis

This section considers the acceptable LPFM-use channels listed above,
and determines which of these channels will be less likely to suffer
interference from existing or authorized stations. This analysis only
considers spacing, and assumes that the interfering stations are
operating with the reference facilities for the FM station's class.
While helpful, the results shown below should not take the place of a
thorough analysis of all options by a broadcast consulting engineer.

If interference is possible, the following table will contain: Call Sign
of the interfering station Channel of that station Channel
relationships: Same channel OR First-adjacent channel OR Second
-adjacent channel Actual separation (in km) Minimum Separation for no
interference within the 60 dBu contour (based on reference facilities
and flat terrain)

Channel 241 KYMX 241 Same channel (cochannel) 124.6 km actual 143.0 km
for no interference KSQQ 241 Same channel (cochannel) 84.6 km actual
92.0 km for no interference

Channel 245 KSEG 245 Same channel (cochannel) 129.8 km actual 143.0 km
for no interference

Channel 273 KSFM 273 Same channel (cochannel) 111.5 km actual 143.0 km
for no interference KDON-FM 273 Same channel (cochannel) 138.4 km actual
143.0 km for no interference

A simple test for potential interference is to tune a radio to the
channel or frequency under consideration, while at the proposed
transmitter site. If a station can be heard, you should expect that
coverage from an LPFM station may be diminished. Interference to the
LPFM station could occur at some future date should the listed FM
station increase its facilities to the maximums permitted for the
station's class.
"





Use the fcc url to see the below list with one station per line:

"
FM, FM Translator & Booster, and TV Channel 6 Stations Considered in
this Analysis

(Stations marked with an asterisk provide Radio Reading Service and must
be protected on third adjacent channels.)

KBKF-LP 6 TX SAN JOSE CA US N 37 6 39 W 121 50 37 88.63 km away at
324.10° T K201BV 201 D FX BENICIA-MARTINEZ CA US N 38 0 25 W 122 8 34
37.96 km away at 222.59° T KEAR-FM 201 B FM SACRAMENTO CA US N 38 14 50
W 121 30 3 98.56 km away at 236.53° T KECG 201 D FM EL CERRITO CA US N
37 54 20 W 122 17 34 20.86 km away at 216.82° T KZSC 201 B FM SANTA CRUZ
CA US N 37 0 10 W 122 3 4 90.17 km away at 338.05° T KZSC 201 B FM SANTA
CRUZ CA US N 37 0 10 W 122 3 4 90.17 km away at 338.05° T KWTF 201 A FM
BODEGA BAY CA US N 38 21 43 W 122 58 43 82.53 km away at 144.63° T KSRH
201 D FM SAN RAFAEL CA US N 37 58 16 W 122 30 47 24.92 km away at
164.04° T KQED-FM 203 B FM SAN FRANCISCO CA US N 37 41 23 W 122 26 13
7.28 km away at 1.34° T KXPR 205 B FM SACRAMENTO CA US N 38 16 25 W 121
30 11 100.04 km away at 235.07° T K205BM 205 D FX SAN RAFAEL, ETC. CA US
N 37 45 19 W 122 27 6 1.47 km away at 89.99° T KXPR 205 B FM SACRAMENTO
CA US N 38 30 42 W 121 10 14 139.06 km away at 233.14° T KUSP 205 B FM
SANTA CRUZ CA US N 36 32 5 W 121 37 14 153.57 km away at 332.24° T KBBF
206 B FM CALISTOGA CA US N 38 39 23 W 122 36 54 101.26 km away at
171.02° T KCEA 206 A FM ATHERTON CA US N 37 29 32 W 122 16 28 32.45 km
away at 334.25° T KOHL 207 A FM FREMONT CA US N 37 32 14 W 121 54 14
52.75 km away at 297.57° T KMTG 207 A FM SAN JOSE CA US N 37 12 6 W 121
51 42 79.67 km away at 320.76° T NEW 207 A FM SANTA CRUZ CA US N 37 3 43
W 122 7 14 81.83 km away at 340.28° T KARC 207 A FM MOSS BEACH CA US N
37 33 44 W 122 28 46 21.78 km away at 10.32° T NEW 207 A FM SCOTTS
VALLEY CA US N 37 3 43 W 122 7 14 81.83 km away at 340.28° T DKYPI-FM
207 A FM PIERCE CA US N 38 5 53 W 122 5 59 48.13 km away at 217.75° T
KPDO 207 A FM PESCADERO CA US N 37 15 11 W 122 24 37 55.78 km away at
357.77° T KPFB 207 A FM BERKELEY CA US N 37 52 20 W 122 16 18 19.37 km
away at 227.86° T KSMC 208 A FM MORAGA CA US N 37 50 25 W 122 6 36 30.14
km away at 251.79° T NEW 208 B FM DOS PALOS CA US N 36 59 54 W 120 54 10
159.61 km away at 302.33° T KYNJ 208 A FM TRACY CA US N 37 39 10 W 121
28 38 85.23 km away at 278.00° T KZCT 208 A FM VALLEJO CA US N 38 9 6 W
122 11 25 48.97 km away at 206.03° T KYNJ 208 A FM TRACY CA US N 37 40
27 W 121 29 3 84.32 km away at 276.45° T KPOO 208 A FM SAN FRANCISCO CA
US N 37 47 33 W 122 24 52 4.51 km away at 203.59° T KLVM 209 B FM
PRUNEDALE CA US N 36 45 22 W 121 30 6 138.39 km away at 323.65° T KCAI
209 B FM LODI CA US N 38 16 18 W 121 30 18 99.78 km away at 235.11° T
KLVM 209 B FM PRUNEDALE CA US N 36 45 22 W 121 30 6 138.39 km away at
323.65° T KFJC 209 B1 FM LOS ALTOS CA US N 37 19 14 W 122 8 29 54.78 km
away at 331.92° T KFER 210 A FM SANTA CRUZ CA US N 37 0 45 W 121 58 25
92.01 km away at 333.87° T KCRH 210 D FM HAYWARD CA US N 37 38 23 W 122
6 16 31.85 km away at 293.94° T K210EH 210 D FX BOLINAS CA US N 37 55 50
W 122 43 9 31.69 km away at 127.91° T KDFC 210 B FM ANGWIN CA US N 38 40
9 W 122 37 53 102.89 km away at 170.36° T KYCC 211 B FM STOCKTON CA US N
37 57 30 W 121 16 55 103.95 km away at 257.78° T KBCZ 211 A FM BOULDER
CREEK CA US N 37 8 31 W 122 5 16 74.68 km away at 335.90° T KZSU 211 A
FM STANFORD CA US N 37 24 42 W 122 10 41 44.38 km away at 329.43° T KDVS
212 B1 FM DAVIS CA US N 38 35 47 W 121 40 49 114.41 km away at 215.43° T
KOSC 212 B1 FM SAN FRANCISCO CA US N 37 51 4 W 122 29 50 11.97 km away
at 152.82° T KVHS 213 A FM CONCORD CA US N 38 1 49 W 122 0 3 48.89 km
away at 231.38° T KWMR 213 A FM POINT REYES STATION CA US N 38 4 48 W
122 51 57 52.29 km away at 133.56° T KSJS 213 A FM SAN JOSE CA US N 37
12 33 W 121 46 30 84.15 km away at 316.40° T KAIS 214 B1 FM TRACY CA US
N 37 33 37 W 121 36 19 76.35 km away at 286.79° T KSRI 214 A FM SANTA
CRUZ CA US N 37 0 10 W 122 3 5 90.16 km away at 338.06° T KALX 214 A FM
BERKELEY CA US N 37 52 40 W 122 14 44 21.52 km away at 230.76° T * KXJZ
215 B FM SACRAMENTO CA US N 38 42 38 W 121 28 54 134.95 km away at
218.39° T KCSM 216 B1 FM SAN MATEO CA US N 37 32 8 W 122 20 0 25.98 km
away at 339.91° T KSVY 217 A FM SONOMA CA US N 38 16 47 W 122 26 47
58.22 km away at 179.02° T KSVY 217 A FM SONOMA CA US N 38 13 56 W 122
29 47 53.21 km away at 174.19° T KDVZ 217 A FM POINT REYES CA US N 37 59
50 W 123 0 43 57.43 km away at 117.80° T KDVZ 217 A FM POINT REYES CA US
N 37 59 45 W 123 0 9 56.62 km away at 118.06° T KUOP 217 B FM STOCKTON
CA US N 37 28 48 W 121 21 2 100.50 km away at 288.10° T KASK 218 A FM
FAIRFIELD CA US N 38 19 9 W 121 59 31 73.69 km away at 211.89° T KXCF
218 A FM MARSHALL CA US N 38 9 0 W 122 51 42 57.67 km away at 139.43° T
KKUP 218 B1 FM CUPERTINO CA US N 37 6 40 W 121 50 36 88.62 km away at
324.07° T KALW 219 B1 FM SAN FRANCISCO CA US N 37 45 17 W 122 26 44 0.93
km away at 86.19° T KLVR 220 B FM MIDDLETOWN CA US N 38 40 9 W 122 37 53
102.89 km away at 170.36° T K221DQ 221 D FX PETALUMA CA US N 37 50 57 W
122 29 56 11.84 km away at 151.72° T KKDV 221 A FM WALNUT CREEK CA US N
37 54 2 W 122 5 7 34.76 km away at 242.37° T KSJO 222 B FM SAN JOSE CA
US N 37 12 32 W 121 46 27 84.22 km away at 316.38° T KFBK-FM 223 B FM
SACRAMENTO CA US N 38 42 26 W 121 28 33 134.97 km away at 218.66° T NEW
224 D FX LAGUNITAS CA US N 38 1 37 W 122 42 55 38.95 km away at 140.76°
T NEW 224 D FX LAGUNITAS CA US N 38 1 37 W 122 42 55 38.95 km away at
140.76° T KREV 224 A FM ALAMEDA CA US N 37 47 54 W 122 24 59 5.05 km
away at 198.87° T KFGY 225 B FM HEALDSBURG CA US N 38 45 45 W 122 50 24
117.29 km away at 162.35° T KRZZ 227 B FM SAN FRANCISCO CA US N 37 41 13
W 122 26 3 7.58 km away at 359.45° T KXZM 229 B1 FM FELTON CA US N 37 9
35 W 121 54 32 80.84 km away at 325.12° T KJZY 229 A FM SEBASTOPOL CA US
N 38 25 7 W 122 40 33 76.60 km away at 163.98° T KPFA 231 B FM BERKELEY
CA US N 37 51 55 W 122 13 12 22.53 km away at 237.14° T KBAY 233 B FM
GILROY CA US N 37 12 32 W 121 46 27 84.22 km away at 316.38° T KYLD 235
B FM SAN FRANCISCO CA US N 37 41 22 W 122 26 10 7.31 km away at 0.76° T
KUIC 237 B1 FM VACAVILLE CA US N 38 23 44 W 122 5 56 76.94 km away at
202.56° T KRTY 237 A FM LOS GATOS CA US N 37 12 17 W 121 56 56 74.71 km
away at 325.13° T KGMZ 239 B FM SAN FRANCISCO CA US N 37 41 23 W 122 26
12 7.28 km away at 1.15° T KSQQ 241 A FM MORGAN HILL CA US N 37 11 1 W
121 48 9 84.59 km away at 318.90° T KYMX 241 B FM SACRAMENTO CA US N 38
38 9 W 121 33 11 124.59 km away at 218.48° T KOIT 243 B FM SAN FRANCISCO
CA US N 37 45 19 W 122 27 6 1.47 km away at 89.99° T KWAV 245 B FM
MONTEREY CA US N 36 32 5 W 121 37 14 153.57 km away at 332.24° T KSEG
245 B FM SACRAMENTO CA US N 38 38 53 W 121 28 38 129.84 km away at
220.43° T KLLC 247 B FM SAN FRANCISCO CA US N 37 51 3 W 122 29 51 11.95
km away at 152.65° T K249DJ 249 D FX SAN PABLO CA US N 37 57 29 W 122 18
41 25.00 km away at 205.74° T KFFG 249 A FM LOS ALTOS CA US N 37 18 27 W
122 5 41 58.09 km away at 329.03° T KVRV 249 B1 FM MONTE RIO CA US N 38
32 25 W 122 57 40 98.58 km away at 152.05° T KISQ 251 B FM SAN FRANCISCO
CA US N 37 51 4 W 122 29 50 11.97 km away at 152.82° T KUFX 253 B FM SAN
JOSE CA US N 37 12 17 W 121 56 56 74.71 km away at 325.13° T KRXQ 253 B
FM SACRAMENTO CA US N 38 38 53 W 121 5 51 153.45 km away at 230.07° T
KSOL 255 B FM SAN FRANCISCO CA US N 37 45 19 W 122 27 6 1.47 km away at
89.99° T KSQL 256 B FM SANTA CRUZ CA US N 37 6 39 W 121 50 37 88.63 km
away at 324.10° T KVYN 257 A FM ST. HELENA CA US N 38 25 34 W 122 19 33
75.07 km away at 187.33° T KMVQ-FM 259 B FM SAN FRANCISCO CA US N 37 41
15 W 122 26 4 7.52 km away at 359.63° T KZST 261 A FM SANTA ROSA CA US N
38 25 7 W 122 40 33 76.60 km away at 163.98° T KBRG 262 B FM SAN JOSE CA
US N 37 6 40 W 121 50 34 88.65 km away at 324.05° T KZZO 263 B FM
SACRAMENTO CA US N 38 38 30 W 121 5 25 153.48 km away at 230.43° T
KPRC-FM 264 B FM SALINAS CA US N 36 32 5 W 121 37 14 153.57 km away at
332.24° T KVVZ 264 A FM SAN RAFAEL CA US N 37 58 49 W 122 31 39 26.27 km
away at 161.99° T KMIX 265 A FM TRACY CA US N 37 37 29 W 121 23 57 92.51
km away at 279.37° T K265DI 265 D FX SAUSALITO CA US N 37 51 4 W 122 29
49 11.95 km away at 152.93° T KIOI 267 B FM SAN FRANCISCO CA US N 37 41
24 W 122 26 13 7.25 km away at 1.35° T KHTH 269 B1 FM SANTA ROSA CA US N
38 30 31 W 122 39 41 85.94 km away at 166.63° T K269FB 269 D FX
SAUSALITO CA US N 37 51 4 W 122 29 50 11.97 km away at 152.82° T KKIQ
269 A FM LIVERMORE CA US N 37 35 42 W 121 39 42 70.51 km away at 284.91°
T KUZX 271 B FM SAN FRANCISCO CA US N 37 51 3 W 122 29 51 11.95 km away
at 152.65° T KDON-FM 273 B FM SALINAS CA US N 36 45 23 W 121 30 5 138.38
km away at 323.64° T KSFM 273 B FM WOODLAND CA US N 38 35 20 W 121 43 30
111.50 km away at 214.03° T KWVF 274 A FM GUERNEVILLE CA US N 38 29 20 W
123 1 53 96.78 km away at 147.21° T KBLX-FM 275 B FM BERKELEY CA US N 37
41 20 W 122 26 7 7.37 km away at 0.19° T NEW 277 D FX BROADMOOR CA US N
37 33 44 W 122 28 46 21.78 km away at 10.32° T NEW 277 D FX BROADMOOR CA
US N 37 33 44 W 122 28 46 21.78 km away at 10.32° T KATM 277 B FM
MODESTO CA US N 37 34 30 W 121 21 13 97.49 km away at 282.22° T KOSF 279
B FM SAN FRANCISCO CA US N 37 41 17 W 122 26 7 7.46 km away at 0.19° T
KJOR 281 A FM WINDSOR CA US N 38 32 28 W 122 54 5 96.33 km away at
154.84° T NEW 281 D FX SAN FRANCISCO CA US N 37 45 19 W 122 27 6 1.47 km
away at 89.99° T NEW 281 D FX SAN FRANCISCO CA US N 37 45 19 W 122 27 6
1.47 km away at 89.99° T KHKK 281 B FM MODESTO CA US N 37 39 10 W 121 28
38 85.23 km away at 278.00° T KFOG 283 B FM SAN FRANCISCO CA US N 37 45
19 W 122 27 6 1.47 km away at 89.99° T KXSC 285 A FM SUNNYVALE CA US N
37 19 22 W 121 45 15 76.97 km away at 308.91° T KMHX 285 B1 FM ROHNERT
PARK CA US N 38 23 31 W 122 40 40 73.81 km away at 163.22° T KNCI 286 B
FM SACRAMENTO CA US N 38 38 31 W 121 5 25 153.50 km away at 230.42° T
KITS 287 B FM SAN FRANCISCO CA US N 37 41 20 W 122 26 7 7.37 km away at
0.19° T KSAC-FM 288 B1 FM DUNNIGAN CA US N 38 47 17 W 122 6 52 118.02 km
away at 193.79° T KVVF 289 B FM SANTA CLARA CA US N 37 21 32 W 121 45 22
74.39 km away at 306.58° T KMEL 291 B FM SAN FRANCISCO CA US N 37 41 24
W 122 26 13 7.25 km away at 1.35° T KTRY 292 A FM CAZADERO CA US N 38 29
20 W 123 1 53 96.78 km away at 147.21° T KEZR 293 B FM SAN JOSE CA US N
37 12 32 W 121 46 27 84.22 km away at 316.38° T KBZC 293 B FM SACRAMENTO
CA US N 38 38 30 W 121 5 25 153.48 km away at 230.43° T KFRC-FM 295 B FM
SAN FRANCISCO CA US N 37 51 4 W 122 29 50 11.97 km away at 152.82° T
KLVS 297 B FM LIVERMORE CA US N 37 49 17 W 121 46 49 58.14 km away at
262.92° T KSAN 299 B FM SAN MATEO CA US N 37 41 20 W 122 26 7 7.37 km
away at 0.19° T KDND 300 B FM SACRAMENTO CA US N 38 42 38 W 121 28 54
134.95 km away at 218.39° T

"





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