Modifications for the ICOM - RogerK

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Tasmania, Australia. email: vk7zdj@southcom.com.au.MODIFICATION.NETThis modification is read 2191 times.top of page23-08-1999(IC-2800) IC-2800/HM98 tx-audio modFrom: PA3HGT@ON6AR.#AN.BEL.EUWhen you own a ICOM 2800H with the HM98 mike , use this nice trx in the mobile like i do, receive sometimes complains aboutthe hollow modulation and pick up too many backgroundnoise ? Then maybe this is the solution too eliminate this problem.Solder a capacitor between 10 - 47 nf paralell on the mic-element.If you opened the HM98-mike , you can see that the audio cannot applied properly to the mike-element .To change that , you've too drill a small hole of 1mm so that the audio is applied into the center of the mic-element.This modification is read 2312 times.top of page31-10-1999(IC-2800) sensitivity ICOM IC-2800HHere are some sensitivitymeasurements for the Icom IC2800H results are uV/10 db sinad.136 Mc : 0.144 uV 400 Mc : 0.174 uV140 Mc : 0.167 uV 405 Mc : 0.163 uV144 Mc : 0.14 uV 410 Mc : 0.144 uV145 Mc : 0.133 uV 415 Mc : 0.137 uV146 Mc : 0.132 uV 420 Mc : 0.133 uV147 Mc : 0.11 uV 425 Mc : 0.11 uV148 Mc : 0.109 uV 430 Mc : 0.109 uV150 Mc : 0.114 uV 431 Mc : 0.11 uV155 Mc : 0.11 uV 432 Mc : 0.107 uV160 Mc : 0.138 uV 433 Mc : 0.109 uV165 Mc : 0.115 uV 434 Mc : 0.111 uV170 Mc : 0.108 uV 435 Mc : 0.112 uV174 Mc : 0.108 uV 436 Mc : 0.111 uV437 Mc : 0.111 uV----------------- 438 Mc : 0.108 uVFm narrow mode 439 Mc : 0.111 uVused on 2mtrs 440 Mc : 0.133 uVonly on Europe & 441 Mc : 0.103 uVItaly versions ! 442 Mc : 0.106 uV144 Mc : 0.088 uV 443 Mc : 0.095 uV145 Mc : 0.087 uV 444 Mc : 0.11 uV146 Mc : 0.087 uV 445 Mc : 0.106 uV147 Mc : 0.085 uV 446 Mc : 0.104 uV148 Mc : 0.085 uV 447 Mc : 0.107 uV448 Mc : 0.104 uV449 Mc : 0.105 uV450 Mc : 0.107 uV455 Mc : 0.141 uV460 Mc : 0.199 uV465 Mc : 0.167 uV470 Mc : 0.153 uV475 Mc : 0.139 uV480 Mc : 0.151 uV485 Mc : 0.162 uV490 Mc : 0.167 uV495 Mc : 0.168 uV500 Mc : 0.18 uV505 Mc : 0.175 uV510 Mc : 0.199 uV515 Mc : 0.225 uV520 Mc : 0.282 uV525 Mc : 0.352 uV530 Mc : 0.485 uVThis modification is read 2314 times.top of page
02-04-2000(IC-2800) IC-2800H cross band mode operationAuthor: Colin G1IVG - colinlowe@jet.es.MODIFICATION.NETStep #1:Prior to the cross band mode, set the squelch delay to short or the audio for the first 3 seconds will be chopped off in your nexttransmission. (Use the set-up menu shown in the manual).Step #2:To start the cross band mode, set the VHF and UHF frequencies you like to link together for cross band operation, (program thesplits, PL tone, etc. all in advance)Step #3: (Main Step)Press and hold "CHG/L" button while holding both VHF and UHF "MAIN" buttons simultaneously for few seconds until the blinkingkey icon appears.Step #4: (This is an optional step)Set hang up time to ZERO on cross band repeat mode by pressing and holding "CHG/L" button while holding UHF "MAIN" andbottom menu key at VHF side for few seconds. The Key lock indicator will blink, and the unit is ready to operate. (This is a directtranslation form the Japanese manual. You may omit this step or experiment with it.)Step #5:To disable the cross band, repeat the step #3 above until the blinking KEY icon disappears.This modification is read 2638 times.top of page27-01-2001(IC-2800) DTMF options cardAuthor: 73 de SM0XKO PeterIf you have ICOM IC-2800 + options DTMF card ( CT-91 ) (in sweden UT-49) you can make changes from other radios throughDTMF tones.First!Push [DTMF] twice on the radio and it´s light (REMO) in the display.To make changes pressOpen = B code # default code = 0001 = Call channel2 = Memory3 = VFO6 = High transmit power9 = Low transmit power* = step down# = step upA = EscapeD = Clear only in mode 2 or 3. After that you can enter memory channel number or VFO MhzDB* = Log out / Cross band repeater ONB* = Log out / Cross band repeater OFFGood luck! / 73 de SM0XKO Peter
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Modifications for the ICOMcreated 2
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(IC-271)(IC-271)(IC-271)(IC-2710)(I
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(IC-475)(IC-475)(IC-475)(IC-475)(IC
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(IC-756pro) Expand tx-freqeuncy for
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(IC-W2E)(IC-W31)(IC-W31)(IC-W31)(IC
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2. After about 0.5 second, press st
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21-10-1999(AT-500) ICOM AT-500 Tune
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4. Program the radio to the local w
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19-07-1998(IC-03) ICOM 02/03/04 & V
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This modification is read 553 times
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6. Reinstall the RAM board into the
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27-10-1998(IC-1275) Power control m
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27-10-1998(IC-1275) Modification of
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●Connect the short plug end with
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This modification is read 1316 time
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50MHz to something like 204MHz cont
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26-07-2001(IC-207) Band Expansion f
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Page 37 and 38: Fig. 3: The circuit extract from IC
Page 39 and 40: 19-07-1998(IC-22) Icom IC22S Packet
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Page 43 and 44: More detailed:In the true spirit of
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Page 47 and 48: In addition, if you want to put an
Page 49 and 50: By diode:●●Remove D17 diode on
Page 51 and 52: 1. Remove diode D14 (if there is an
Page 53 and 54: cut... I'm guessing, but it could b
Page 55 and 56: 19-07-1998(IC-24) IC-24AT enabling
Page 57 and 58: 19-07-1998(IC-24) Tip to to functio
Page 59 and 60: This complete the mods done with su
Page 63 and 64: Comment:These TRX is accorded to my
Page 65 and 66: this mod of use as I have.Any comme
Page 67 and 68: other wires come in. Take the cable
Page 69 and 70: 17-11-2000(IC-2700) Enabling ICOM 2
Page 71 and 72: 19-07-1998(IC-271) IC-271 / 471 fue
Page 73 and 74: RAM card version B images:This modi
Page 75 and 76: 12-11-2000(IC-2710) Crossband Repea
Page 77 and 78: Note:From Bill K7RIEICOM has not tr
Page 79 and 80: 19-07-1998(IC-275) Improve the stab
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Page 83 and 84: Note: a strong signal will be serio
Page 85 and 86: 19-07-1998(IC-28) The long, noisy s
Page 87: not a hard mod to do,..........but
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Page 93 and 94: encased it in shrink-tube. The oper
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Page 97 and 98: 19-07-1998(IC-2IA) IC-2IA lousey xm
Page 99 and 100: 1. Change to RECEIVER MODE (not rec
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Page 105 and 106: MODIFICATION (Refer to figure 1.)1.
Page 107 and 108: Procedure1. Remove the covers from
Page 109 and 110: 19-07-1998(IC-3200) Fix for IC-3200
Page 111 and 112: 4. select a frequency of 150.000Mhz
Page 113 and 114: 19-07-1998(IC-3220) How to iface Ic
Page 115 and 116: Now power on and type in the freque
Page 117 and 118: One note on the above - the BNC con
Page 119 and 120: e shorted to ground and cause PLL u
Page 121 and 122: 19-07-1998(IC-451) IC-451 aus 9600F
Page 123 and 124: 3. If by accident you lose power to
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Page 127 and 128: Problem:This is a general transceiv
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Remove the back cover. If you place
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27-10-1998(IC-575) SSB RF GainProbl
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26-06-2001(IC-575) Pass band Tuning
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The trimpot leads will need to bent
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19-07-1998(IC-706) Info/mods for IC
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¦ ¦¦ ¦¦ ¦¦ ¦¦ ¦----------
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From: gary@ke4zv.atl.ga.us (Gary Co
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Mehr Dynamik in der Modulation beko
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Operation:Be sure to read the manua
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Alternative zum modifizierten PC St
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●●●●●(Another receiver wi
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| IC31 uPD4094BG || |1 2 3 4 |5 6 7
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D116 and D118 are responsible for o
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Transmit power output after modific
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This information and photos was sup
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22-02-2002(IC-706MKII) IC-706MKIIG
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Delete cap. CT14 at pin 6 of IC3 on
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18-06-2000(IC-729) Using two Icom r
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19-07-1998(IC-735) IC-735 Remote Wo
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19-07-1998(IC-736) Icom IC-736 DDS/
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Also probably would apply to IC 735
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RAM card version B images:This modi
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John Schmitz NS8EAdditional informa
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13-01-2002(IC-746) Monitor Audio Ou
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19-07-1998(IC-751) IC-751 Bad Cap P
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inspect your job to be sure that th
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28-01-2002(IC-751) ICOM IC-751 Dual
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Step 8: Turn the radio off and inst
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To be neater you could remove the s
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[W804] | |Remove=>[W805] | CHIP |[W
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Date: 23-02-2002 User comment From:
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less.The second way to adjust the I
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23-11-2001(IC-756pro2) IC-756PRO2 T
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19-07-1998(IC-765) Icom IC-765 Pass
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19-07-1998(IC-775) New product info
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70% AM.My personal findings are tha
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11. Re-install board and all cables
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The Yaesu FT726R first appeared ten
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There seemed to be no way of changi
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Add a diode on the blank position b
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---- gar keine Diode ----Breitband
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To disable the x-band repeater just
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Well this should make things verry
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Set radio in VFO mode, and select f
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27-05-2001(IC-910) Expanded functio
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●●●350-470 MHz RX/TX800-950 M
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1. You're completely successful.2.
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●●●●●●●●●Für Han
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28-03-1999(IC-Q7) Modifying the ICO
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●●●●●●●●Desoldering
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You should now have the RF board co
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BOOT:Attenuator protecs strong sign
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1. Use an ohmmeter to determine whi
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2. Remove battery cover and battery
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Fig. 4. Receiving AO-40 (at MA=13)O
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This modification can also be found
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The Q and not Q outputs on this IC
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Date: 30-12-2001 User comment From:
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Removing 1F unit1. Pull the 2 knobs
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16-05-1999(IC-T8) Problem with the
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800 -
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Frequencyrange after modification:5
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Offset Freq: Hold [FUNC], Press [4]
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The Icom IC W21AT handi-talkie norm
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19-07-1998(IC-W2A) IC-W2A signal le
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19-07-1998(IC-W31) IC-W31E CROSS-BA
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15-10-2000(IC-W31) Cross Band Repea
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could always try it.Set VHF and UHF
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31-07-2001(IC-W32) Icom IC-W32A pro
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IC-4GAT - Turn the radio on, hold [
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IC-M9 - Hold [HI/LO] & [DW/SCAN] bu
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IC-275H 10IC-375A 12IC-471 22IC-475
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I have tested this mod with a ic-75
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How further up the hole is the bett
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Connect the NTC, FAN and power and
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5, 31, 48, and 79.4. Does the Prior
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19-07-1998(R-7000) Modify your ICOM
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1. C231 from 1000 pf to 68 pf.2. C2
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19-07-1998(R-71) Tricking the ICOM
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There are two wires which send logi
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A. Remove the top cover of the rece
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08-11-1998(R-7100) Modify your Icom
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17-03-2002(R-7100) Icom R7100 Discr
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23-08-1998(R-8500) Operating the Ic
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Modifications for the ICOM - RogerK

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