A GENERALGUIDETOSCANNING
B I R D I E SCROSSMODULATION
Birdiesaretheproductsof internallygeneratedsignalsthat makesomefrequenciesdifficultor impossibleto receivelf. youprogramoneof thesefrequencies,youhearonlynoise onthatfrequency.
lf the interferenceisnotsevere,youmightbeabteto turn SQUELCHclockwiseto cut outthebirdieThe.mostcom- monbirdiesto watchoutforarelistedbelow.
BirdieFrequencies
Whenusingan externalantenna, strongfrequencyclose to the
(likecrosstalk).SettheATTswitchontheback
dBto minimizecrossmodulation.
RECEpTION 'tvNOTESr hvII
Receptionon the frequenciescoveredby yourscanneris I "line
mainly of sight.That"meansyouusuallycannothear stationsat yourlisteninglocationthatarelocatedbeyond II
|
|
|
|
| the horizon' |
|
|
| I | ||
44.36oMHz208.000MH2767.400MH2953.250MH21232.600MH2 |
|
|
|
|
| ||||||
|
|
|
|
| Duringsummermonths,you |
|
|
| |||
13:333212.L23 |
|
|
|
|
| mishtbeabretoh_ear:tat | |||||
|
|
|
|
|
|
|
| I | |||
70.23s | 24s.7so | 133:333l3li333 13i3333','the | |||||||||
sos.gso | 1026.000 | 124s.850 |
|
| I | ||||||
70.085 | 25o.5oo | 81s.6oo | 10s2.750 | 1248.650 | thousands of miles away. This is due to | summer atmo_ | |||||
i3:??3 i:.t}iZ | !]3933 |
|
| sphericconditionsrhistype. |
| ||||||
1333:3131333:333 |
|
| orreceptionisunpreoiciaoI | ||||||||
79.435 | 298.0625 | g22.2so | 1104.2s0 | 1262.7so | _ut oftenvery interesting! |
|
| ||||
79 . 800 | 298 . 8125 | 851 . 875 1107 . 000 1265 . 500 | n^^ . ,^^,, . ^^r,,r | ^^ _ . :^^ ! - ^L _ r, - r! |
|
| |||||
80.520 | 3o9.Boo | 8s4.375 | rroe.zso |
| une veryusefulserviceis the NationalWeather |
| |||||
tili.iso |
|
|
|
|
| Service's | |||||
83.170 | 310.600 |
|
| continuousweatherbroadcastsThese. |
| I | |||||
8s6.87s 1112.s00 1275.1s0 |
|
| |||||||||
|
|
|
|
| weatherforecasts | broadcastscontain I | |||||
#ff:3333il:333 | 336:331!ll33?3131L;.?EB |
|
| anddatafortheareaaround |
| ||||||
bulletins |
|
| ll._:jltlo",I | ||||||||
86.86s | s42.goo | 902.562s | 1169.182s1288.400 |
| on any threateningweather conditions. I | ||||||
| |||||||||||
122s7s | 366.000 | 905.062s 1203.312s 12s1.200 | Thesestationsusethreefrequencies:162.40,162.47s, |
| |||||||
|
|
|
|
| 162.55MHzInmostareas |
| and | I | |||
13631Ll3?:li3 | 313:1331333:3?33i333:333 |
|
|
| ofthecountry,youcanreceive | ||||||
one of thesefrequencies. |
|
| I | ||||||||
144.1s5 | 465.250 | s21.12s | pzq.zo6" |
|
|
| I | ||||
155.125 | 488.375 | 948.250 | 1227.OO0 |
|
|
|
|
|
|
| I |
203.500 | 501.4375 | 950.7s0 | 1229.800 |
|
|
|
|
|
|
| I |
26 |
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
| 1 | |
|
|
|
|
|
|
|
|
|
|
| |
