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Uniden/Force AMH 350 Frequency programming
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amh350.ipynb
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"\n",
"Pin Number: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18\n",
"Designation - N8 N7 N6 N5 N4 N3 N2 N1 N0 A5 A4 A3 A2 A1 A0 K Common\n",
"Value - 256 128 64 32 16 8 4 2 1 32 16 8 4 2 1 - - \n",
"155.995: 1 1 1 0 0 0 0 1 0 1 1 0 1 0 0 0 0 0\n",
"150.010: 1 1 0 1 1 1 0 1 1 1 0 0 0 0 0 1 1 0\n",
"150.025: 1 1 0 1 1 1 0 1 1 1 0 0 0 0 1 1 0 0\n",
"155.995: 1 1 1 0 0 0 0 1 0 1 1 0 1 0 0 0 0 0\n",
"146.520: 1 1 0 1 1 0 1 1 1 0 0 0 1 1 0 1 1 0\n",
"145.050: 1 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1 1 0\n",
"145.050: 1 1 0 0 1 1 0 1 0 1 0 0 0 1 0 1 1 0\n",
"144.390: 1 1 0 1 1 0 1 0 0 0 1 0 0 1 1 1 1 0\n",
"144.390: 1 1 0 0 1 1 0 0 1 1 0 1 0 0 1 1 1 0\n",
"144.392: ERROR\n",
"145.047: ERROR\n",
"145.049: ERROR\n"
]
}
],
"source": [
"import math\n",
"\n",
"def workdiodes(freq, recv=False):\n",
" \"\"\"\n",
" Formulas for calculating the frequency:\n",
" \n",
" Fc = freq For transmitting frequency.\n",
" Fc = freq For receiving fequency.\n",
" N = Fc/0.4 Disregarding any fractional part.\n",
" A = (Fc - 0.4 * N)/0.01 Rounding up any fractional part.\n",
" K = 0 If the frequency ends in 5 Khz\n",
" K = 1 If the frequency ends in 0 Khz\n",
" \n",
" Example:\n",
" Calculating for 155.995 Mhz.\n",
" \n",
" N = 155.995/0.4 = 389.9875\n",
" \n",
" Therefore, N = 389\n",
" \n",
" A = (155.995 - 0.4 * 389)/0.1 = .395/0.01 = 39.5\n",
" \n",
" Therefore, A = 40\n",
" \n",
" The freqency ends in 5 kHz. Therefore K = 0\n",
" \n",
" Finally, convert the N and A to binary. N = 110000101, A = 101000\n",
" \n",
" In the pinout below, pin 1 is always \"1\", and 18 \n",
" is always 0.\n",
" \n",
" Pin Number: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18\n",
" Designation N8 N7 N6 N5 N4 N3 N2 N1 N0 A5 A4 A3 A2 A1 A0 K Common\n",
" Decimal Value 256 128 64 32 16 8 4 2 1 32 16 8 4 2 1 \n",
" Binary Code 1 1 1 0 0 0 0 1 0 1 1 0 1 0 0 0 0 0\n",
" \n",
" This is a common cathode array, so the diode's cathode (black band side) are all joined together \n",
" and connected to pin 18. When connecting diodes, you leave binary \"1\" disconnected (or cut), and\n",
" only connect \"0\". \n",
" \"\"\"\n",
" if recv:\n",
" Fc = freq - 21.4\n",
" else:\n",
" Fc = freq\n",
"\n",
" # Pad the frequency for display\n",
" freq_fmt = \"{:.3f}\" # 3 decimals\n",
" freq = freq_fmt.format(freq)\n",
" \n",
" # if freq ends in 5, K=0, else K =1\n",
"\n",
" if freq[6:] == \"0\":\n",
" K = 1\n",
" elif freq[6:] == \"5\":\n",
" K = 0\n",
" else:\n",
" return \"{0}: ERROR\".format(freq)\n",
" \n",
" N = int(Fc/0.4) # Disrearding any fractional part\n",
" A = int(math.ceil((Fc - 0.4 * N)/0.01)) # Rounding UP any fractional part\n",
"\n",
" # N binary will always be 9 characters, A binary will be 6\n",
" # http://stackoverflow.com/a/21732313/895866 \n",
" get_bin = lambda x, n: x >= 0 and str(bin(x))[2:].zfill(n) or \"-\" + str(bin(x))[3:].zfill(n)\n",
" \n",
" Nb = get_bin(N, 9)\n",
" Ab = get_bin(A, 6)\n",
" \n",
" return \"{0}: {1}{2}{3}\".format(freq, Nb, Ab, K)\n",
"\n",
"def pinline(line):\n",
" \n",
" # Binary Code 1 1 1 0 0 0 0 1 0 1 1 0 1 0 0 0 0 0\n",
" if len(line) != 25:\n",
" return line\n",
" \n",
" outline = []\n",
" for x in range(0, len(line)):\n",
" if x < 8:\n",
" outline.append(line[x])\n",
" elif x == 8:\n",
" outline.append(' 1 ')\n",
" else:\n",
" outline.append('{0} '.format(line[x]))\n",
"\n",
" # Now add the common 0\n",
" outline.append('0')\n",
" return ''.join(outline)\n",
"# return \"\"\"{0[0:9]} 1 {0[0]} {0[1]} {0[2]} {0[3]} {0[4]} {0[5]} {0[6]} {0[7]}\n",
"# {0[8]} {0[9]} {0[10]} {0[11]} {0[12]} {0[13]} {0[14]} {0[15]} {0[16]}\n",
"# {0[17]}\"\"\".format(line)\n",
" \n",
"print(\"\"\"\n",
"Pin Number: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18\n",
"Designation - N8 N7 N6 N5 N4 N3 N2 N1 N0 A5 A4 A3 A2 A1 A0 K Common\n",
"Value - 256 128 64 32 16 8 4 2 1 32 16 8 4 2 1 - - \"\"\")\n",
"\n",
"print(pinline(workdiodes(155.995)))\n",
"print(pinline(workdiodes(150.010)))\n",
"print(pinline(workdiodes(150.025)))\n",
"print(pinline(workdiodes(155.995)))\n",
"print(pinline(workdiodes(146.520)))\n",
"print(pinline(workdiodes(145.050)))\n",
"print(pinline(workdiodes(145.050, True)))\n",
"print(pinline(workdiodes(144.390)))\n",
"print(pinline(workdiodes(144.390, True)))\n",
"print(pinline(workdiodes(144.392)))\n",
"print(pinline(workdiodes(145.047)))\n",
"print(pinline(workdiodes(145.049)))"
]
}
],
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