/g/ic7000 This is a group dedicated to the Icom IC-7000 compact mobile IF-DSP HF/VHF/UHF transceiver. **Please note** A valid amateur radio license is a prerequisite for membership. Applicants are requested to state their name and callsign; this will speed up the approval process. ***ALL REQUESTS FOR MEMBERSHIP WILL BE DENIED IF A CALLSIGN IS NOT PROVIDED*** If your membership is denied, it is most likely because you did not provide the information listed above. Please reapply with your callsign and name. There are constant spambots joining yahoogroup lists, and we are doing our best to keep them off this list. Spam, racism, name-calling, vulgarity, religious or political propaganda, personal insults and/or verbal abuse will not be tolerated in this group at any time. Any member posting such material will be placed on moderated status, and is subject to deletion and banning. '73 de JIM N2ZZ ic7000 Listowner Tue, 15 Feb 2005 10:13:56 -0800 /g/ic7000/message/43022 <div>Hi switch on select VHF and measure the voltsge on the gate, if the bias is set low there should be low volts on the gate. Check the spec of the transistor, and check where it is, most RF Fet&#39;s turn on between 3 and 4 bolts.<br/><br/></div> <div>KR<br/><br/></div> <div>Andrew<br/><br/></div> <div>Get <a href="https://bluemail.me" rel="nofollow noopener" target="_blank">BlueMail for Android</a> </div> <div class="gmail_quote">On 12 Apr 2025, at 21:57, &#34;Bob via <a href="http://groups.io" rel="nofollow noopener" target="_blank">groups.io</a>&#34; &lt;<a href="mailto:w4jfabob=&lt;a" rel="nofollow noopener" target="_blank">gmail.com</a>@groups.io target=_blank&gt;w4jfabob=<a href="http://gmail.com" rel="nofollow noopener" target="_blank">gmail.com</a>@groups.io&gt; wrote:</div> a@... (Andrew Lenton) Sun, 13 Apr 2025 01:16:07 -0700 /g/ic7000/message/43021 <div>I ordered some from ICOM for a friend less than a year ago. As you can see, you need a spare.<div>Bob W4JFA聽</div></div><br/> W4JFABob@... (Bob) Sat, 12 Apr 2025 13:57:19 -0700 /g/ic7000/message/43020 <div>When I was reinstalling the MAIN board, I noticed that some of the conductors had lifted from the ribbon cables.聽 I squeezed them down, flattened them out and got them into the sockets anyway.聽 The TX adjustment did not go well (see thread about interpreting adjustment instructions).聽 Today I pulled them out of J2004 and J2005 and found that two conductors may have contacted each other.聽 That&#39;s very consistent with Andrew&#39;s comment that I have a ribbon cable fault.聽</div> <div>One one cable, some of the conductors have delaminated only in the first 2 mm from the end of the cable.聽 Is there enough contact area in the connector mechanism that I could just cut the first mm of the cable and its stiffener off so that the delaminated conductor doesn&#39;t fold back or sideways and cause a problem and then plug it in?</div> <div>Elsewhere I&#39;ve found advice to superglue the conductors back down.聽 So I&#39;ll try that on the ones that have a longer delamination region.聽</div> <div>If this fails, are these cables something I would have to order from Icom?聽 Or are there standard conductor pitches on such cables, in which case I could order some material from DK or Mouser, cut the length and width I need, scrape the paint of the conductors at the end, and possibly glue a stiffener to the end, too?</div> <div>This is probably the most modern radio I&#39;ve tried to repair.聽 I don&#39;t yet know much about these flexible ribbon cables.聽 I&#39;m used to the ones made from individual, insulated, stranded wire with 0.5 inch pitch.</div> <div>Halden VE7UTS</div> incorridge@... (HF) Sat, 12 Apr 2025 12:40:23 -0700 /g/ic7000/message/43019 <div>Hi you have a ribbon cable fault which is putting DC on the gate of the VHF transistor, this needs to be fixed first.<br/><br/></div> <div>KR<br/><br/></div> <div>Andrew<br/><br/></div> <div>Get <a href="https://bluemail.me" rel="nofollow noopener" target="_blank">BlueMail for Android</a> </div> <div class="gmail_quote">On 12 Apr 2025, at 07:16, &#34;HF via <a href="http://groups.io" rel="nofollow noopener" target="_blank">groups.io</a>&#34; &lt;<a href="mailto:incorridge=&lt;a" rel="nofollow noopener" target="_blank">yahoo.com</a>@groups.io target=_blank&gt;incorridge=<a href="http://yahoo.com" rel="nofollow noopener" target="_blank">yahoo.com</a>@groups.io&gt; wrote:</div> a@... (Andrew Lenton) Sat, 12 Apr 2025 01:24:15 -0700 /g/ic7000/message/43018 <div>Thanks for the confirmation, Andrew.</div> <div>In the first setting, &#34;TX Driver Idle&#34;, the radio drew 1.57A at setting 00, which gradually increased with higher settings until it went from 1.80 A to 2.67A between setting 72 and 73.聽 Turning the knob CCW brought it down slowly to 2.55 at setting 60.聽 But when I re-enter the test at setting 60, or if I turn it down to 00 and back up to 60 again, the radio draws 1.78 A.聽 Is this how it&#39;s supposed to work?聽 If not, what component of the driver circuit is likely to have failed, causing this hysteresis?</div> <div>The next two settings seemed to work okay.聽 The setpoints were in the vicinity of the original setpoints.</div> <div>The third one, &#34;Final Idle (144M)&#34;, drew 9.9A with a setting of 00, falling to 8.7A after about 10 seconds.聽 Turning the knob was able to get it up to 9.7A, but I thought there might be a malfunction, so I turned it back down to 00.聽 The 4th one, &#34;Final Idle (430M)&#34;, drew 1.57 to 1.60 A regardless of the setting.聽 I left it at 00 too.</div> <div>I didn&#39;t connect the microphone exactly as the service manual says.聽 Instead, I used the regular microphone in a quiet room.聽 When I pressed the microphone&#39;s PTT switch; the radio went into TX mode and stayed in TX mode until I pressed F4 (SET) and/or the up arrow (F1) to go back to the top of the test menu.</div> <div>I&#39;m working on these adjustments because the radio gives low output on all HF and 50M bands.聽 The amount of low output varies; I started out with 29W on 40m and when I went back to it after checking all the other bands, it was down to 14W.聽 Most bands&#39; power output was in the 5-10W range.聽 I haven&#39;t checked power output on 2m or 0.7m; I don&#39;t have a good wattmeter for VHF and UHF.</div> <div>Does the high current on 2m and low current on 0.7m mean the final transistors for those bands have failed?</div> <div>Cheers,</div> <div>Halden VE7UTS</div> incorridge@... (HF) Fri, 11 Apr 2025 23:16:57 -0700 /g/ic7000/message/43017 <html><head><meta http-equiv="Content-Type"/><meta name="Generator"/></head><body lang="EN-GB"><div class="WordSection1"><p class="MsoNormal"><span style="font-family: sans-serif; color: blue">Hi the way to look at this is this:</span></p><p class="MsoNormal"><span style="font-family: sans-serif; color: blue">聽</span></p><ol style="" start="1" type="1"><li class="MsoListParagraph" style="color: blue"><span style="font-family: sans-serif">Connect an 1-5 amp meter (DVM) in series with the rig, or use a power supply that shows current digitally.</span></li><li class="MsoListParagraph" style="color: blue"><span style="font-family: sans-serif">Set all the bias controls to zero</span></li><li class="MsoListParagraph" style="color: blue"><span style="font-family: sans-serif">Switch on and put into to TX (SSB)</span></li><li class="MsoListParagraph" style="color: blue"><span style="font-family: sans-serif">Note the current the rig draws.</span></li><li class="MsoListParagraph" style="color: blue"><span style="font-family: sans-serif">You can then adjust the driver ideal current for an additional 1A</span></li><li class="MsoListParagraph" style="color: blue"><span style="font-family: sans-serif">You can then adjust the driver VHF Final current for an additional 2A</span></li><li class="MsoListParagraph" style="color: blue"><span style="font-family: sans-serif">You can then adjust the driver UHF Final current for an additional 2.5A</span></li></ol><p class="MsoNormal"><span style="font-family: sans-serif; color: blue">聽</span></p><p class="MsoNormal"><span style="font-family: sans-serif; color: blue">When you switch form HF to VHF to UHF, the bias current falls to zero on the non-use band</span></p><p class="MsoNormal"><span style="font-family: sans-serif; color: blue">聽</span></p><p class="MsoNormal"><span style="font-family: sans-serif; color: blue">MOSFET unlike bi-polar are nearer to class A (AB2) than Class AB1, or B (which is just conducting)</span></p><p class="MsoNormal"><span style="font-family: sans-serif; color: blue">聽</span></p><p class="MsoNormal"><span style="font-family: sans-serif; color: blue">KR</span></p><p class="MsoNormal"><span style="font-family: sans-serif; color: blue">聽</span></p><p class="MsoNormal"><span style="font-family: sans-serif; color: blue">Andrew G8UUG</span></p><p class="MsoNormal"><span style="font-family: sans-serif; color: blue">聽</span></p><p class="MsoNormal"><span style="font-family: sans-serif; color: blue">聽</span></p><p class="MsoNormal"><span style="font-family: sans-serif; color: blue"><img width="927" height="676" style="" id="Picture_x0020_1" src="/g/ic7000/attachment/43017/0" loading="lazy" class="myimg-responsive"/></span><span style="font-family: sans-serif; color: blue"></span></p><p class="MsoNormal"><span style="font-family: sans-serif; color: blue">聽</span></p><div style="border: none; border-top: solid #E1E1E1 1.0pt"><p class="MsoNormal"></p></div></div> a@... (Andrew Lenton) Fri, 11 Apr 2025 03:36:57 -0700 /g/ic7000/message/43016 <div>Page 18 (marked 4-3) of the service manual explains adjustment of the final idle current.聽 It mentions connecting an ammeter that monitors the power supply current during the test and power meters to both antenna jacks.聽 Then it has this text:</div> <div>聽</div> <div>Rotate [DIAL] to set adjustment value to<br/>1 A value from the driving current of &#34;00&#34;<br/>value. Then push [F-4 (SET )].</div> <div>聽</div> <div>But there is no instructions for connecting an ammeter to the driver stage to measure or adjust its current.聽 Does &#34;driving current&#34; here actually mean the power supply current?聽 If yes, does this mean that one is supposed to record the power supply current when the adjustment value is at zero, then increase the adjustment setting until the power supply current is 1.0A more than it was at the zero setting?</div> <div>聽</div> <div>Cheers,</div> <div>Halden VE7UTS</div> incorridge@... (HF) Thu, 10 Apr 2025 22:16:56 -0700 /g/ic7000/message/43015 <div>This filter had different bandwidths for the different analogue TV systems around the world, Which have all creased transmitting.<br/><br/></div> <div>So do not pursue any further.<br/><br/></div> <div>KR<br/><br/></div> <div>Andrew<br/><br/></div> <div>Get <a href="https://bluemail.me" rel="nofollow noopener" target="_blank">BlueMail for Android</a> </div> <div class="gmail_quote">On 10 Apr 2025, at 01:20, &#34;HF via <a href="http://groups.io" rel="nofollow noopener" target="_blank">groups.io</a>&#34; &lt;<a href="mailto:incorridge=&lt;a" rel="nofollow noopener" target="_blank">yahoo.com</a>@groups.io target=_blank&gt;incorridge=<a href="http://yahoo.com" rel="nofollow noopener" target="_blank">yahoo.com</a>@groups.io&gt; wrote:</div> a@... (Andrew Lenton) Thu, 10 Apr 2025 01:30:40 -0700 /g/ic7000/message/43014 <div>I&#39;m trying to bring my new (to me) IC-7000 back to life.聽 It seems that the previous owner had connected the CIVE line to some voltage source other than ground.聽 Both ferrite beads between the connector and the logic board had ruptured.聽 For the time being, I bypassed them with wire.聽 I plan to go back in and install the proper beads if I can get the radio to work otherwise.</div> <div>The MAIN PCB layout differs a bit from the one in the service manual:聽 One of the ferrite beads is between the REMOTE and VIDEO connector instead of between the REMOTE and RTTY connectors.</div> <div>As I organized the various clips and connectors during PCB re-installation, I noticed that FL1501 is rectangular and black, not a metal can as shown in the service manual and other inside views I&#39;ve found on the internet.聽 The part number is M3565M, for which I was able to find a datasheet on the internet.聽 It&#39;s a TV filter that separates out the video from the audio signals.聽 The service manual&#39;s parts list says the part should be</div> <div>WFSTSB6321D [Others] or WFSTSB6221D [USA].</div> <div>The block diagram calls it</div> <div>TSB6221D except [UK] or TSB6322C [UK].</div> <div>The schematic calls it</div> <div>TSB6321D [Others]聽 or TSB6221D [USA]</div> <div>which agrees with the parts list other than the &#34;WFS&#34; prefix.</div> <div>I haven&#39;t been able to find a datasheet for any of these on the internet.</div> <div>Is this a factory change?聽 Or a modification by the previous owner?聽 Does it matter if I don&#39;t use the radio to receive video transmissions?</div> <div>Thanks!</div> <div>Halden VE7UTS</div> <div>聽</div> incorridge@... (HF) Wed, 09 Apr 2025 17:27:01 -0700 /g/ic7000/message/43013 <div>Hi Dave,<br/>Thanks for reply. Dummy load is ok (I use the same one for my SSPA testing, and also 7300 shows ok). I have done some more measurements, specifically on J101, Driver IN and Driver OUT (attached). I have also found a reference in the group regarding voltage level of a working IC-7000 (also attached for reference.)<br/><br/>The power out is not consistent, sometime changes a bit.<br/><br/>Thanks, Fazlay S21RC</div> fazlay.rabby@... Sun, 06 Apr 2025 20:53:29 -0700 /g/ic7000/message/43012 <p dir="ltr">Silly but have you tested the dummy load is it still 50ohm on all bands being used on,<br/> Dave 2E0DMB </p> <br/> davidbrowne76@... (davebb123456) Sun, 06 Apr 2025 12:34:35 -0700 /g/ic7000/message/43011 <div>Hello all,<br/>Greetings. This is my first post in this group. Last time when I fixed my IC-7000 I took help from the IC-7000 Yahoo group ;) back in 2009.<br/>After almost 12 years I brought this radio out of the storage for some VHF/UHF qso. Now I found there is no power at 70cm, and HF power varies band to band.<br/><br/>Initial check found the UHF PA gone, bias was dropping too low. Replaced the RD60HUF1, set the driver and PA bias. Getting only around 15-20watt. 2m the PA looks ok but getting around 15W.<br/><br/>I have cleaned all the connectors, replaced all the flex ribbons. still no luck. The output in HF band fluctuates randomly.</div> <div>Driver board no burn, put back with heat paste (old version - no resistor at gate).<br/><br/>I have checked all related post in this group. The BIAS of pre-driver Q101 and Q102 both ok (around 2.x V, no broken trace). Took some measurement with a cheap USB scope:<br/><br/>Attached is the schematic where I measured the data, and also the data table.<br/><br/>Can you please advise what might be the problem, or what should I check?<br/><br/>Thanks in advance, Fazlay S21RC<br/><br/></div> fazlay.rabby@... Sun, 06 Apr 2025 12:22:02 -0700 /g/ic7000/message/43010 <div>The rocker switches are what I started with. To change bands one needs to stop the vehicle or risk a violent/fiery death. The thing is, it works MOST of the time, until it doesn&#39;t, usually on 80/40. But the primary question is still, why can I not adjust the tune power in the hidden service menu?</div> ka4koe@... (Philip Neidlinger) Mon, 31 Mar 2025 11:38:14 -0700 /g/ic7000/message/43009 <div><div><br/></div>I was never happy with any auto-tuners I has thrown money at. I found them to be sensitive to RF no matter what I did. The fact that they told you to lower tuning power is a proof yo what I found.<div><br/></div><div>Then, I got two momentary rocker switches and put them in a small box. I have been tuning my screwdriver antenna manually using the SWR meter in IC7000 since then and never looked back.<div><br/></div><div>ismail</div><div>KT6LN</div><div><br/></div></div></div><br/> ke6tln@... ((( KT6LN ))) Mon, 31 Mar 2025 10:19:01 -0700 /g/ic7000/message/43008 <div>Hello</div> <div>聽</div> <div>I am trying to finish up my mobile HF installation. Still having some issues, but I&#39;ve grounded and bonded the radio, antenna, etc. very well (maybe however, not well enough). I&#39;ve also installed lots of good quality ferrites.聽</div> <div>After talking to the manufacturer of the screwdriver controller, he suggested I try reducing the tune power. The unit is a Tune-Matic EZ-Tune (Icom).</div> <div>聽</div> <div>So, I inserted a shorted 1/8&#34; TS male plug into the CI-V jack and turned the radio on with two of the front buttons pressed. I&#39;m in the service menu.</div> <div>There is an item under the TX submenu where you can adjust the tune power (AM) when hitting the remote AT button on front. The current setting is &#34;36&#34;.</div> <div>However, I cannot change this value by rotating the VFO knob per the service manual.</div> <div>聽</div> <div>Any suggestions?</div> <div>聽</div> <div>Thanks</div> <div>聽</div> <div>Philip Neidlinger</div> <div>KA4KOE</div> ka4koe@... (Philip Neidlinger) Mon, 31 Mar 2025 10:03:01 -0700 /g/ic7000/message/43007 <html><head><meta http-equiv="Content-Type"/> </head><body> <div class="moz-cite-prefix"><span class="HwtZe" lang="en"><span class="jCAhz ChMk0b"><span class="ryNqvb">I predict a short life for power transistors...<br/> 聽 </span></span></span>馃槀<br/> <br/> Best regards,<br/> Ludovic - F5PBG<br/> <a class="moz-txt-link-freetext" href="https://www.youtube.com/@F5PBG" rel="nofollow noopener" target="_blank">https://www.youtube.com/@F5PBG</a><br/> <br/> Le 29/03/2025 脿 22:40, Edward Luers via groups.io a 茅crit聽:<br/> </div> f5pbg@... (Ludovic Ludo) Sun, 30 Mar 2025 04:43:17 -0700 /g/ic7000/message/43006 <div dir="ltr">AROUND 70 TO 80W.<div><br/></div><div>73, Ed KE6SU</div></div><br/> eluers2@... (Edward Luers) Sat, 29 Mar 2025 14:40:52 -0700 /g/ic7000/message/43005 <div>Ed, out of curiosity, what power level do you use on FT8 with your 7000.聽</div> <div>73, Larry W7DGP</div> llryan@... (Larry Ryan) Sat, 29 Mar 2025 14:04:11 -0700 /g/ic7000/message/43004 <div dir="ltr">Thanks for the input.聽 The radio now works correctly.</div> eluers2@... (Edward Luers) Sat, 29 Mar 2025 07:49:55 -0700 /g/ic7000/message/43003 <div>Ed, It&#39;s not the radio.聽</div> <div>On your computer that you&#39;re using for FT-8,聽 Increase the drive on your USB Audio Codec.</div> <div>Like Don said, there&#39;s not enough drive from the sound card.</div> <div>聽</div> n6mg@... (N6MG) Sat, 29 Mar 2025 07:44:56 -0700