Radio Shack 20-164 User Manual
0
1
Appendix F: Specifications
Frequency.Coverage:
25.000-26.960.MHz....................(in.10.kHz.steps/AM)
26.965-27.405.MHz....................(in.10.kHz.steps/AM)
27.410-29.505.MHz......................(in.5.kHz.steps/AM)
29.510-29.700.MHz...................... (in.5.kHz.steps/FM)
29.710-49.830.MHz.................... (in.10.kHz.steps/FM)
49.835-54.000.MHz...................... (in.5.kHz.steps/FM)
108.000-136.9916.MHz...........(in.8.33.kHz.steps/AM)
137.000-137.995.MHz.................. (in.5.kHz.steps/FM)
138.000-143.9875.MHz........... (in.12.5.kHz.steps/FM)
144.000-147.995.MHz.................. (in.5.kHz.steps/FM)
148.000-150.7875.MHz........... (in.12.5.kHz.steps/FM)
150.800-150.845.MHz.................. (in.5.kHz.steps/FM)
150.8525-154.4975.MHz........... (in.7.5.kHz.steps/FM)
154.515-154.640.MHz.................. (in.5.kHz.steps/FM)
154.650-156.255.MHz............... (in.7.5.kHz.steps/FM)
156.275-157.450.MHz................ (in.25.kHz.steps/FM)
157.470-161.5725.MHz............. (in.7.5.kHz.steps/FM)
161.600-161.975.MHz.................. (in.5.kHz.steps/FM)
162.000-174.000.MHz............. (in.12.5.kHz.steps/FM)
216.0025-219.9975.MHz.............. (in.5.kHz.steps/FM)
220.000-224.995.MHz.................. (in.5.kHz.steps/FM)
225.000-379.975.MHz................(in.25.kHz.steps/AM)
380.000-419.9875.MHz........... (in.12.5.kHz.steps/FM)
420.000-450.000.MHz.................. (in.5.kHz.steps/FM)
450.00625-469.99375.MHz..... (in.6.25.kHz.steps/FM)
470.000-512.000.MHz............. (in.12.5.kHz.steps/FM)
764.000-766.996875.MHz..... (in.3.125.kHz.steps/FM)
773.000-775.996875.MHz..... (in.3.125.kHz.steps/FM)
794.000-796.996875.MHz..... (in.3.125.kHz.steps/FM)
803.000-805.996875.MHz..... (in.3.125.kHz.steps/FM)
806.000-823.9875.MHz........... (in.12.5.kHz.steps/FM)
849.000-868.9875.MHz........... (in.12.5.kHz.steps/FM)
894.000-939.9875.MHz........... (in.12.5.kHz.steps/FM)
940.000-960.000.MHz............. (in.6.25.kHz.steps/FM)
1240.000-1300.000.MHz......... (in.6.25.kHz.steps/FM)
Memory.Channels./.Banks...........................1000./.10
Talk.group.ID.memories.....................................1,500
ID.memory.banks./.Sub-banks..........................10./.5
Number.of.memory.IDs.per.sub-bank...................30
Sensitivity.(20.dB.S/N):
FM:
25–54.MHz........................................................ 0.3.uV
108–136.99166.MHz......................................... 0.3.uV
137–174.MHz.................................................... 0.5.uV
216.0025–224.975MHz..................................... 0.5.uV
225-299.975.MHz.............................................. 0.5.uV
300-405.975.MHz.............................................. 0.8.uV
406–512.MHz.................................................... 0.5.uV
764–960.MHz.................................................... 0.7.uV
1240–1300.MHz................................................ 0.7.uV
AM:
25–54.MHz........................................................... 1.uV
108–136.99166.MHz............................................ 1.uV
137–174.MHz.................................................... 1.5.uV
216.0025–224.975MHz..................................... 1.5.uV
225-299.975.MHz................................................. 2.uV
300-405.975.MHz................................................. 3.uV
406–512.MHz....................................................... 2.uV
764–960.MHz....................................................... 2.uV
1240–1300.MHz................................................... 3.uV
Selectivity:
All.AM.and.FM.(except.AM.25.–.27.995.MHz)
..............................................................6.dB.+/-7.kHz
.........................................................-50.dB.+/-13.kHz
AM.25.–.27.995.MHz
.............................................................-6.dB.+/-4.kHz
...........................................................-50.dB.+/-6.kHz
Spurious.Rejection.(at.154.1.MHz.FM)............. 40.dB
Scanning.Rate...........Up.to.60.Channels.per.Second
Search.Rate.....................Up.to.78.Steps.per.Second
Delay.Time..................................................2.seconds
Intermediate.Frequencies.(IF):
1st............................................................... 380.8.MHz
2nd............................................................... 21.4.MHz
3rd...................................................................455.kHz
Priority.Sampling........................................2.seconds
Operating.Temperature........................... 14.to.140°.F
.
(-10.to.60°.C)
IF.Rejection
380.8.MHz.at.154.1.MHz.................................... 60.dB
21.4.MHz.at.154.1.MHz.................................... 100.dB
Squelch.Sensitivity:
Threshold.(FM.and.AM)................................... 0.5.uV
Tight.(FM).......................................................... 25.dB
Tight.(AM).......................................................... 20.dB
Antenna.Impedance.....................................50.Ohms
Audio.Output.Power.(10%.THD)..................170.mW
Built-in.Speaker........................1.3/8.Inches.(36.mm)
.
(8-ohm,.Dynamic.Type)
Power.Requirements:
Batteries.............................................................. 4.AA
External.Power.................................................. 9V.DC
Current.Drain.(Squelched)...............................90.mA
Battery.Charge.Current..................................150.mA
Dimensions.(HWD).....5.3./4.x.2.9./16.x.1.5./8.Inches
.
(145.x.65.x.42.mm)
Weight.(without.antenna.and.batteries)..........8.5.oz.
.
(240.g)
Specifications and depictions are subject to change
and.improvement.without.notice..Actual.product.may.
vary.from.the.images.found.in.this.document.