HC-25/u crystal	HC-6/u crystal	HC-18/w crystal	HPCS-25	CSS-6

Other crystal style designations:
CR-7, CR-18/U, CR-23/U, CR-32/U, CR-33/U, & CR-36/U are identical to HC-6/u
HC-18/u and HC49/u are identical to HC-18/w shown above
HC-6/L same body size as HC-6/u except has .093" pins instead of .050" pins
HC-6/W same size as HC-6/u except it has wire leads instead of .050" pins
HC-17/u same body size as HC-6/u, except with .093 pins--also called HC-6/L
FT-241 is "bottom-screw take-apart" holder with .093 pins spaced equal to HC6/L
FT-243 (type Z-2) is "sandwich take-apart" holder with .093 pins spaced equal to HC6/L

Fundamental Frequency ($12) crystal List:
131.4, 148, 149, 202.317, 205, 205.317, 209.817, 234, 236, 244, 252, 256.128, 260, 308, 315, 316, 327.82, 340, 355, 364, 412, 428, 453.5, 456.5,
{note--above numbers--this section--in kHz; below numbers are shown in MHz}
1.220625-pt, 1.400-pt, 1.650-pt, 1.662=bx, 1.750=bx, 2.009-pt, 2.125, 2.145, 2.155, 2.180, 2.190, 2.205, 2.225, 2.75875-pt,
3.120, 3.54833-pt, 3.579545, 3.620-used, 3.785=HC6W,
4.000(hundreds-HC18/u), 4.085-pt, 4.192, 4.300, 4.400, 4.410, 4.420, 4.430, 4.440, 4.595, 4.615, 4.625, 4.635, 4.685-pt, 4.755, 4.795, 4.920-pt, 4.9504-pt
5.047, 5.120, 5.335-pt, 5.542, 5.545, 5.548, 5.695, 5.705, 5.715, 5.725, 5.735, 5.8015, 5.900, 5.995
6+++MHz crystals: ($12) (includes HR2A=FreqX24 Ham 2 Meter transmit crystals)
6.000, 6.005, 6.010 6.015, 6.020, 6.02128, 6.025, 6.035, 6.040, 6.0875(146.100), 6.08875(146.130), 6.0900(146.160), 6.09125(146.190), 6.0925(146.22), 6.09375(146.250), 6.09500(146.280), 6.09625(146.310), 6.0965, 6.0975(146.340), 6.09875(146.370), 6.1000(146.400), 6.10125(146.430), 6.1025(146.460), 6.1050(146.520), 6.1065, 6.1100(146.640), 6.1125(146.700), 6.11375(146.730), 6.1150(146.760), 6.11625(146.790), 6.1165, 6.1175(146.820), 6.1200(146.880), 6.12125(146.910), 6.1225(146.940), 6.12625(147.030), 6.1265, 6.13625(147.270), 6.140416(147.370), 6.14125(147.390), 6.16125(147.870), 6.11617(147.880), 6.150(147.600), 6.1504, 6.160, 6.16625(147.990), 6.170, 6.1704, 6.1750(148.200), 6.180, 6.1804, 6.18375(148.410), 6.190, 6.1904, 6.200, 6.21458(149.15), 6.2235, 6.2265, 6.2535, 6.25375(150.090), 6.2565, 6.2835, 6.2865, 6.355, 6.450, 6.460, 6.470, 6.480, 6.490
7.3435, 7.3585, 7.3615, 7.3685, 7.3715, 7.3728(100-HC-49/u-HC18/u), 7.3785, 7.3815, 7.3885, 7.3915, 7.3985, 7.4015, 7.4225, 7.4325, 7.4425, 7.4525, 7.455-pt, 7.4585, 7.4600, 7.4615, 7.4625, 7.4685, 7.4700, 7.4715, 7.4725, 7.4785, 7.4800, 7.4815, 7.4825, 7.4885, 7.490, 7.4915, 7.4925, 7.4965, 7.4985, 7.500, 7.5525, 7.640, 7.705, 7.7083, 7.7098, 7.7125, 7.715-pt, 7.719, 7.725-pt, 7.7265, 7.7266, 7.7627, 7.7291, 7.735-pt, 7.7432, 7.7433, 7.745, 7.7458, 7.7532, 7.7599, 7.7600, 7.7625, 7.793, 7.7975, 7.7985, 7.800, 7.8015, 7.8025, 7,8266, 7.8600, 7.866, 7.8666, 7.8766, 7.8767, 7.8791, 7.87916, 7.8933, 7.8934, 7.895, 7.8958, 7.89583, 7.9100, 7.9125, 7.9268, 7.9291, 7.9433, 7.9435, 7.9460, 7.954, 7.959, 7.9625, 7.9660, 7.976, 7.9791, 7.986, 7.9935, 7.996,
8+++MHz crystals: ($12) (includes HR2B=FreqX18 Ham 2 Meter transmit crystals).
8.000, 8.004, 8.0102, 8.0525, 8.059, 8.07944(145.43) 8.109, 8.11166(146.010), 8.112, 8.11333(146.040), 8.115(146.070), 8.1166(146.100), 8.11833(146.130), 8.15333(146.76) 8.120(146.160), 8.12333(146.220), 8.125(146.250), 8.1266(146.280), 8.12833(146.310), 8.130(146.340), 8.13166(146.370), 8.1333(146.400), 8.135(146.430), 8.1366(146.460), 8.140(146.520), 8.1466(146.640), 8.150(146.700), 8.15166(146.730), 8.15333(146.760), 8.155(146.790), 8.1566(146.820), 8.159, 8.160(146.880), 8.16166(146.910), 8.1633(146.940), 8.1635, 8.1665, 8.1666(147.000), 8.1735, 8.1765, 8.18166(147.270), 8.1835, 8.1865, 8.190(147.420), 8.1935, 8.1965, 8.20166(147.630), 8.2065, 8.215(147.870), 8.245(148.410), 8.304(149.470), 8.309, 8.33833(150.090), 8.359, 8.409, 8.421, 8.429, 8.431, 8.441, 8.451, 8.459, 8.461, 8.462, 8.489, 8.509, 8.513, 8.519, 8.529, 8.589, 8.615-pt, 8.625-pt, 8.635, 8.645, 8.655-pt, 8.659, 8.709, 8.759, 8.809, 8.859,
9.02166-pt, 9.03833-pt, 9.055=pt, 9.155, 9.205, 9.255, 9.510, 9.545, 9.555, 9.565, 9.575, 9.56833, 9.585, 9.586, 9.694, 9.744, 9.785, 9.794, 9.820, 9.844, 9.894, 9.944, 9.977,
10.000, 10.010, 10.020, 10.030, 10.040, 10.070, 10.072, 10.140, 10.150, 10.160, 10.1625, 10.165*, 10.170, 10.180, 10.190, 10.195, 10.197, 10.200, 10.240, 10.245, 10.345, 10.400, 10.410, 10.412, 10.422, 10.425, 10.455-pt, 10.595, 10.605, 10.615, 10.625, 10.635, 10.640, 10.692, 10.695, 10.6975, 10.700, 10.795, 10.800, 10.820, 10.825. 10.826, 10.850, 10.900, 10.950, 10.9582, 10.9625(PLL=$12), 10.9655(PLL=$12), 10.975, 10.985, 10.995
11.000, 11.0035, 11.0335, 11.035, 11.060, 11.070, 11.080, 11.090, 11.100, 11.1125, 11.120, 11.150, 11.155=32pf, 11.1758=32pf get chan 16-59 in 11.1125 radios, 11.1785, 11.200, 11.205, 11.228, 11.2580, 11.2595*, 11.260, 11.2625, 11.270, 11.272, 11.275, 11.2842, 11.2850=o.s., 11.2858, 11.2935, 11.300, 11.310, 11.313, 11.320, 11.325, 11.3258/11.326, 11.330, 11.350, 11.360, 11.390, 11.400, 11.440, 11.445, 11.450, 11.462, 11.4758, 11.485, 11.490, 11.500, 11.505, 11.520, 11.535, 11.540, 11.550, 11.555, 11.575, 11.590, 11.596, 11.600*, 11.6035*, 11.605, 11.640, 11.650, 11.655, 11.690
11.6908* get 28.060-28.500 MHz (Ham 10-Meter) in 11.3258 Cobra/Uniden CB's
11.700, 11.705*, 11.706, 11.730, 11.735, 11.740, 11.750*, 11.755, 11.7645=3, 11.765, 11.7795=5, 11.790, 11.7945=7A, 11.800, 11.8045=9, 11.805, 11.806, 11.8066*, 11.8195=11A-RC, 11.8245=12, 11.8295=13, 11.8345=14, 11.8395=15, 11.840, 11.855, 11.890, 11.897*, 11.8995, 11.905*, 11.906*, 11.9065, 11.91167, 11.925, 11.935, 11.940, 11.950, 11.955, 11.960, 11.970, 11.975, 11.990,
12+++MHz crystals: ($12) includes HRT2=FreqX12 Ham 2 Meter transmit crystals).
12.000, 12.005, 12.010, 12.020, 12.035, 12.040, 12.050, 12.055, 12.060, 12.065, 12.070, 12.075, 12.080, 12.090, 12.095, 12.100, 12.105, 12.120, 12.125, 12.130, 12.135, 12.140, 12.145, 12.150, 12.155, 12.160, 12.165, 12.1675(146.010), 12.170, 12.180(146.160), 12.1825(146.190), 12.185(146.220), 12.190&=(146.280), 12.195&=(146.340), 12.200(146.400), 12.2025(146.430), 12.205(146.460), 12.210(146.520), 12.2175(146.610), 12.220, 12.224166(146.690), 12.225, 12.230(146.760), 12.2325(146.790), 12.240, 12.245(146.940), 12.250&=(147.000), 12.255, 12.2625(147.15), 12.285(147.420), 12.290, 12.300&=(147.600), 12.305, 12.310(147.720), 12.3125(147.75), 12.3225(147.870), 12.325(147.900), 12.340, 12.350, 12.355, 12.400, 12.405, 12.440, 12.490, 12.500, 12.505, 12.540, 12.550, 12.555, 12.570, 12.605, 12.620, 12.650, 12.800, 12.803, 12.87625(154.515), 12.91041, 12.9525, 12.9625, 12.9875,
13+++MHz HC25/u crystals: ($12) includes MT25=FreqX12-Marine Transmit; Marine Receive xtals on scanner xtal page
13.0250(156.300MTch6), 13.029166(156.350MTch7A), 13.03333(156.400MTch8), 13.035416(156.425MTch68), 13.039583(156.475MTch69), 13.041556(156.500MTch10) 13.04375(156.525MTch70), 13.047916(156.575MTch71), 13.0493, 13.0500(156.600MTch12), 13.052083(156.625MTch72), 13.0725, 13.0875(157.05MTch21A), 13.09166(157.100MTch22), 13.0975, 13.095833(157.150MTch23), 13.097916(157.175MTch83), 13.100Synth&(=157.200MTch24), 13.10833(157.300MTch26), 13.1125(157.350MTch27), 13.116666(157.400MTch28), 13.1225, 13.1325, 13.1375, 13.157, 13.400Synth, 13.570,
  Q-group: Ancient HC6/u CB Receive ($10) crystals: 13.260=2R, 13.265=3R, 13.275=4R, 13.280=5R, 13.285=6R, 13.290=7R, 13.305=9R, 13.310=10R, 13.315=11R, 13.325=12R, 13.330=13R, 13.335=14R, 13.340=15R, 13.350=16R, 13.13.355=17R, 13.360=18R, 13.365=19R, 13.375=20R, 13.380=21R, 13.385=22R, 13.395=26R, 13.400=23R,
  C-group: Ancient HC6/u CB Transmit ($10) crystals 13.4675, 13.4725, 13.4775, 13.4825=1T, 13.4925=3T, 13.5075=5T, 13.5125=6T, 13.5225=7A-T, 13.5325=9T, 13.5375=10T, 13.5425=11T, 13.5725=15AT, 13.5775=16T, 13.5875=18T, 13.6025=20T, 13.6075=21T, 13.6125=22T, 13.6225=25T, 13.6275 2=23T, 13.6325=26T, 13.6375=27T, 13.6425=28T, 13.6475=29T, 13.6525=30T, 13.6575=31T, 13.6625=32T, 13.6675=33T, 13.6725=34T, 13.6775=35T, 13.6875=37T, 13.6925=38T, 13.5975=39T, 13.7025=40T
  More Synthesis ($12) & PLL ($12) Crystals
14.010, 14.725, 14.800, 14.860, 14.907, 14.910, 14.914, 14.917, 14.924, 14.934, 14.937, 14.944, 14.947, 14.950, 14.960, 14.970, 14.980, 14.990,
15.150CK-D, 15.155CK-D, 15.220, 15.230, 15.250, 15.260, 15.315-os?, 15.355, 15.360, 15.5367, 15.450, 15.5433, 15.5700, 15.57667, 15.590, 15.600CK-D, 15.605CK-D, 15.610, 15.6233, 15.6433, 15.6566, 15.760, 15.765, 15.800, 15.805, 15.810, 15.815, 15.836, 15.865, 15.915, 15.965, 15.995-pt,
Many Scanner Crystals are in the 15+++ or 16+++MHz frequency range.
16+++MHz HC25/u crystals: ($12) (includes FreqX9 Ham 2 Meter transmit crystals)
numbers (channel freq-10.695MHz) in italics =Browning Mark III/IV SSB 20pf xmit crystals
16.000, 16.015, 16.050CK-D, 16.055CK-D, 16.065, 16.105, 16.1085, 16.115, 16.120, 16.150-pt, 16.165, 16.210, 16.215, 16.230(146.070), 16.235, 16.240, 16.2433(146.190), 16.250, 16.2566(146.310), 16.260&=(146.340), 16.265, 16.270=1, 16.280=(146.520), 16.290=3, 16.295, 16.300, 16.315, 16.320=5, 16.325, 16.340=7, 16.3511(147.160), 16.355, 16.3615, 16.380=10 16.385, 16.410=12, 16.4115, 16.415, 16.430=14, 16.450, 16.460=16, 16.4615, 16.465, 16.470=17 16.480=18, 16.490=19, 16.500, 16.505, 16.5115, 16.530=22 16.540=24 16.550=25, 16.550=HC6, 16.55667, 16.5615, 16.565, 16.580=27, 16.600=29, 16.610=30, 16.615, 16.620=31, 16.625, 16.630=33, 16.6433, 16.650=34, 16.6633, 16.710=40, 16.7115, 16.715, 16.760, 16.765, 16.770, 16.800, 16.815, 16.845, 16.865, 16.915, 16.965,
17.015, 17.065, 17.1085, 17.115, 17.165, 17.215, 17.235, 17.265, 17.280, 17.295, 17.315, 17.365, 17.415, 17.465,
19.565,
20.000, 20.265, 20.465, 20.515, 20.555, 20.565, 20.575, 20.585, 20.605, 20.615, 20.625, 20.655, 20.665, 20.675, 20.705, 20.715, 20.725, 20.755,
22.610-pt,
  Third Overtone ($12) HC25/u synthesis crystal frequency list
22.940, 22.990,
23.035, 23.045, 23.080, 23.085, 23.090, 23.125, 23.130, 13.135, 23.140, 23.180, 23.190, 23.230, 23.240, 23.250, 23.280, 23.290, 23.330, 23.340, 23.380, 23.390, 23.435, 23.440, 23.480, 23.490, 23.505, 23.520, 23.525, 23.530, 23.540, 23.560, 23.570, 23.590, 23.600, 23.610, 23.620, 23.630, 23.640, 23.650, 23.660, 23.680, 23.690, 23.710, 23.720, 23.740, 23.780, 23.790, 23.830, 23.840, 23.880, 23.930, 23.940, 23.990,
24.000, 24.080, 24.130,
25.235-pt, 25.335, 25.365, 25.375, 25.385, 25.700,
  26.510 to 26.950MHz Channels 1 thru 40 B-group=Receive [Walkie Talkie HC25/u & Large HC6/u Crystals for Ancient CB's (specify radio make/model for "Ancient CB" crystals)]
26.510=1R, 26.520=2R, 26.530=3R, 26.550=4R, 26.560=5R, 26.570=6R, 26.580=7R, 26.600=8R, 26.610=9R, 26.620=10R, 26.630=11R, 26.650=12R, 26.660=13R, 26.670=14R, 26.680=15R, 26.700=16R, 26.710=17R, 26.720=18R, 26.730=19R, 26.750=20R, 26.760=21R, 26.770=22R, 26.780=24R, 26.790=25R, 26.800=23R, 26.810=26R, 26.820=27R, 26.830=28R, 26.840=29R, 26.850=30R, 26.860=31R, 26.870=32R, 26.880=33R, 26.890=34R, 26.900=35R, 26.910=36R, 26.920=37R, 26.930=38R, 26.940=39R, 26.950=40R,
  26.965 to 27.405MHz Channels 1 thru 40 A-Group=Transmit [Walkie Talkie HC25/u & Large HC6/u Crystals for Ancient CB's (specify radio make/model for "Ancient CB" crystals)]
26.965=1T, 26.975=2T, 26.985=3T, 27.005=4T, 27.015=5T, 27.025=6T, 27.035=7T, 27.055=8T, 27.065=9T, 27.075=10T, 27.085=11T, 27.105=12T, 27.115=13T, 27.125=14T, 27.135=15T, 27.155=16T, 27.165=17T, 27.175=18T, 27.185=19T, 27.205=20T, 27.215=21T, 27.225=22T, 27.235=24T, 27.245=25T, 27.255=23T, 27.265=26T, 27.275=27T, 27.285=28T, 27.295=29T, 27.305=30T, 27.315=31T, 27.325=32T, 27.335=33T, 27.345=34T, 27.355=35T, 27.365=36T, 27.375=37T, 27.385=38T, 27.395=39T, 27.405=40T, 27.505-pt,
  Ancient H-group=Receive HC6/u Crystals: 27.420=1R, 27.430=2R, 27.440=3R, 27.460=4R, 27.470=5R, 27.480=6R, 27.510=8R, 27.520=9R, 27.530=10R, 27.540=11R, 27.560=12R, 27.570=13R, 27.580=14R, 27.590=15R, 27.610=16R, 27.620=17R, 27.630=18R, 27.640=19R, 27.660=20R, 27.670=21R, 27.680=22R, 27.710=23R, 27.720=26R, 27.730=27R,
  28.500-pt
F-group: Ancient Receive HC6/u Crystals 28.615=1R, 28.625=2R, 28.635=3R, 28.655=4R, 28.665=5R, 28.675=6R, 28.685=7R, 28.705=8R, 28.715=9R, 28.725=10R, 28.735=11R, 28.755=12R, 28.765=13R, 28.775=14R, 28.785=15R, 28.805=16R, 28.815=17R, 28.825=18R, 28.855=20R, 28.865=21R, 28.875=22R, 28.895=24R, 28.905=23R, 28.915=26R, 28.945=29R,
  More Synthesis/PLL ($12) Crystals
29.085, 29.430, 29.515-pt, 29.885,
30.220-pt, 30.820,
  W-group: Ancient HC25/u Receive Crystals: 31.235, 31.265=1R, 31.275=2R, 31.285=3R, 31.295, 31.305=4R, 31.315=5R, 31.325=6R, 31.335=7R, 31.355=8R, 31.365=9R, 31.375=10R, 31.385=11R, 31.405=12R, 31.415=13R, 31.425=14R, 31.435=15R, 31.455=16R, 31.465=17R, 31.475=18R, 31.485=19R, 31.505=20R, 31.515=21R, 31.525=22R, 31.535=24R, 31.545=25R, 31.555=23R, 31.565=26R, 31.575=27R, 31.585=28R, 31.595=29R, 31.605=30R, 31.615=31R, 31.635=33R, 31.645=34R, 31.655=35R, 31.665=36R, 31.675=37R, 31.685=38R, 31.695=39R, 31.705=40R,
  More Synthesis/PLL ($12) Crystals
31.350, 31.400-os; 31.700, 31.795-os; 31.900,
32.020*, 32.380, 32.450, 32.495, 32.500*, 32.520*, 32.550, 32.600, 32.640, 32.645, 32.650, 32.695, 32.700, 32.715, 32.745, 32.750, 32.755, 32.795, 32.800, 32.845, 32.850, 32.895, 32.900, 32.945, 32.950, 32.970, 32.995,
  G-group: Ancient HC6/u Receive Crystals 32.965, 32.975, 33.025, 33.035, 33.045, 33.065, 33.105, 33.115, 33.125, 33.135, 33.155, 33.165, 33.175, 33.205, 33.215, 33.225, 33.255,
  More Synthesis/PLL ($12) Crystals
33.000*, 33.020, 33.030, 33.045, 33.050, 33.025, 33.030, 33.045, 33.050, 33.090, 33.095, 33.100, 33.115, 33.145, 33.150, 33.175, 33.195, 33.200, 33.205, 33.215, 33.235-pt, 33.245, 33.250, 33.265, 33.270, 33.295, 33.300, 33.315, 33.350, 33.400, 33.405, 33.435, 33.450, 33.500, 33.520, 33.550, 33.600, 33.670, 33.700, 33.710, 33.750, 33.766, 33.770, 33.790, 33.890, 33.900, 33.971,
34.000, 34.020, 34.500*, 34.520*, 34.766, 34.771, 34.806, 34.821, 34.871, 34.895*, 34.921, 34.971,
35.021, 35.071, 35.121, 35.171, 35.221, 35.241, 35.271, 35.300*, 35.321, 35.331, 35.371, 35.395*, 35.421-pt, 35.4875* , 35.740*, 35.775-pt, 35.895*, 35.910, 35.915, 35.930*, 35.940*, 35.951, 35.970,
36.000, 36.015, 36.030, 36.035, 36.060, 36.070, 36.105, 36.115, 36.120*, 36.130*, 36.170, 36.180*, 36.190*, 36.230, 36.270, 36.380*, 36.395*, 36.530, 36.570*, 36.630*, 36.750, 36.820*, 36.895*
37.010*, 37.020*, 37.200, 37.250, 37.295, 37.300, 37.340, 37.345, 37.350, 37.395*, 37.400*, 37.445, 37.450, 37.495, 37.500, 37.550, 37.600, 37.650, 37.700, 37.750, 37.795, 37.800, 37.850, 37.870, 37.900, 37.930, 37.950, 37.960, 37.990,
38.000, 38.025, 38.050, 38.100, 38.150, 38.165, 38.195, 38.200, 38.215, 38.265, 38.275&PB, 38.285&PB, 38.295&PB, 38.315&PB, 38.350, 38.385&PB, 38.395&PB, 38.400, 38.415&PB, 38.475, 38.485, 38.515&PB, 38.565, 38.615, 38.665, 38.970,
39.070, 39.130*, 39.160, 39.175, 39.190, 39.230, 39.270, 39.290, 39.570*,
40.000, 40.010*, 40.4875*, 40.500, 40.850, 40.9875*
41.000*, 41.200, 41.250, 41.300, 41.4875*, 41.500*, 41.9875*
42.000*, 42.4875*, 42.500*, 42.9875*
43.000*, 43.4875*, 43.500*, 43.9875*, 44.000*
46.415,
48.525*, 49.025*, 49.405, 49.475, 49.515, 49.525*, 50.025*, 50.525*, 51.525*
  Ham Radio Application Listing Ham Radio band-mixer* crystals: ($12 each)
Kenwood TS820 (HC-25/u): 32.000(26.5-27.0)-out, 32.500(27.0-27.5)*, 33.000(27.5-28.0)*, 33.500(28.0-28.5)*, 34.000(28.5-29.0)*, 34.500(29.0-29.5)*
  Yaesu FT101E & FT401B & FTX400 (HC-25/u): 30.020(24-24.5)*, 30.520(24.5-25.0)*, 32.020(26.0-26.5)*, 32.520(26.5-27.0)*, 33.020(27.0-27.5)*, 33.520(27.5-28.0)*, 34.020(28.0-28.5)*, 34.520(28.5-29.0)*, 35.020(29.0-29.5)* 35.520(29.5-30.0)*
  Heath SB104 & Kenwood TS520 & R599/T599 (HC-25/u): 33.395(24.5-25.0)*, 34.895(26.0-26.5)*, 35.395(26.5-27.0)*, 35.895(27.0-27.5)*, 36.395(27.5-28.0)*, 36.895(28.0-28.5)*, 37.395(28.5-29.0)*
  Yaesu FT101ZD, FT707, FT901DM & FT902DM (HC-25/u): 40.4875(26.0-26.5)*, 40.9875(26.5-27.0)*, 41.4875(27.0-27.5)*, 41.9875(27.5-28.0)*, 42.4875(28.0-28.5)*, 42.9875(28.5-29.0)*, 43.4875(29.0-29.5)*, 43.9875(29.5-30.0)*
  Drake TR4C (HC6/u): , 41.000(26.5-27.0)*, 41.500(27.0-27.5)*,
  Henry Tempo One & Yaesu FT7B & FT301 & FT-200 & Sommerkamp FT250 (HC-25/u): 41.000(26.5-27.0)*, 41.500(27.0-27.5)*, 42.000(27.5-28.0)*, 42.500(28.0-28.5)*, 43.000(28.5-29.0)*, 43.500(29.0-29.5)*, 44.000(29.5-30.0)*
  Tempo 2020 (HC-25/u): 48.525(26.5-27.0)*, 49.025(27.0-27.5)*, 49.525(27.5-28.0)*, 50.025(28.0-28.5)*, 50.525(28.5-29.0)*, 51.525(29.5-30.0)*
  additional Ham "2-Meter" & "220MHz" Transmit ($12) Crystals:
Drake TR33: 146.190, 146.670, 146.790, 146.850, 147.000,
  222.34-T, 223.06-T, 223.34-T, 223.70-T, 229.30-T,
223.70-R, 223.94-R, 224.66-R, 224.940-R
 

Tech Tip: Fundamental vs. Overtone Most crystals are cut by the manufacturer with a fundamental frequency below 20MHz because higher frequencies would make them so thin that they would be extremely fragile! Most crystals below 20MHz are labeled at the "fundamental" frequency. Some crystals around 13MHz are labeled at the "fundamental" frequency but are used at the "2nd overtone" in a CB tuned circuit. Most common crystals for CB & HF amatuer applications are labeled at the "3rd overtone" so crystals labeled from 23 to 54MHz are cut with a "fundamental" that is 1/3 of the frequency they are typically used at. The tuned circuit on the output of the oscillator circuit is what determines the output frequency. Example: a crystal labeled 12.190MHz could be used at 12.190MHz or at 36.570MHz; a crystal labeled 36.570MHz could also be used at 12.190MHz! Crystals for VHF and UHF applications are typically used in an oscillator circuit that operates at the 3rd (or 5th) overtone of the crystal; a "multiplier" circuit is used to get higher multiples of that overtone. Example--most old ham 2 Meter transmitters use crystals cut at 1/9th or 1/12th or 1/18th or 1/24th of the operating frequency!

see our RED BOOK OF CB MODIFICATION & REPAIR for information about CB crystal synthesis circuits.