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Author Topic: Icom IC-7000 version 1 need help  (Read 349 times)

N9NIP

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Icom IC-7000 version 1 need help
« on: December 09, 2022, 09:54:08 PM »

I recently purchased an Icom IC-7000.  I was ecstatic when it came in the mail.  Unfortunately, I found the transceiver has a frequency range of 30Khz to 145.99Mhz, then 430Mhz to 439.99Mhz. After much searching, I found those are the frequency limits of the version 1. The version refers to the location the transceiver is to be used. I have found where the versions 2 and up are intended to be used.  However, I have found almost no information on the Icom IC-7000 S01.  Is there any way to change the frequency limits?  I can not even find information on a MARS modification for the version 1.  Please Help.  Am I stuck with a version 1?
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VR2AX

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Re: Icom IC-7000 version 1 need help
« Reply #1 on: December 10, 2022, 06:59:12 AM »

Have you checked MODS.DK?
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KF4HR

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Re: Icom IC-7000 version 1 need help
« Reply #2 on: December 10, 2022, 07:57:36 AM »

You may have purchased the EU version.  Probably best to call ICOM and ask if it's possible to convert it to the US version.
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LA9XNA

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Re: Icom IC-7000 version 1 need help
« Reply #3 on: December 10, 2022, 09:44:55 AM »

just do the freeband mode.
you will get approximately these frequency bands.
1,6-32 Mhz
40-60 Mhz
136-170 Mhz
420-470 Mhz
I can not remember the exact frequency ranges but it will cover all Ham bands.
I have done this mod on cloes to 100 Ic-7000.

You can find the mod here.
https://www.funkwelt.net/afu-amateurfunk/icom-ic-7000/icom-ic-7000-all-mods/
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N4ATS

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Re: Icom IC-7000 version 1 need help
« Reply #4 on: December 10, 2022, 04:57:32 PM »

Just do the MARS mod   www.mods.dk
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N9NIP

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Re: Icom IC-7000 version 1 need help
« Reply #5 on: December 10, 2022, 11:34:43 PM »

I can not find a MARS mod for the Icom IC-7000 S#01.  I think region 1 is for the Japanese market.  The owner's manual is completely done in Japanese.  Every region has a different version.  I have found several regions, but not region 1. 
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N9NIP

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Re: Icom IC-7000 version 1 need help
« Reply #6 on: December 11, 2022, 07:57:15 PM »

I recently purchased an Icom IC-7000.  I was ecstatic when it came in the mail.  Unfortunately, I found the transceiver has a frequency range of 30Khz to 145.99Mhz, then 430Mhz to 439.99Mhz. After much searching, I found those are the frequency limits of the version 1. The version refers to the location the transceiver is to be used. I have found where the versions 2 and up are intended to be used.  However, I have found almost no information on the Icom IC-7000 S01.  Is there any way to change the frequency limits?  I can not even find information on a MARS modification for the version 1.  Please Help.  Am I stuck with a version 1?

                             x  x          x      x  x
                             o  o      x  o      o  x
                             o  o      o  o      x  x      x  x 
                             o  x      x  o      x  x      x  o

Version 1 diode Matrix diagram (x = diode placement)
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N9NIP

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Re: Icom IC-7000 version 1 need help
« Reply #7 on: December 11, 2022, 08:14:36 PM »

Here is version for U.S.A  S#05
             
               x  o           x       o  x                   
               o  o       x  o       o  x           
               x  o       x  o       x  x      x  o
               x  o       x  x       o  x      x  o

Diagram for version 5 U.S.A (X = Diode)

The difference from version 1 is quite dramatic!
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N9NIP

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Re: Icom IC-7000 version 1 need help
« Reply #8 on: December 12, 2022, 12:05:44 AM »

I have discovered that the left most shift register controls the frequency ranges.  There are two columns in that left most shift register.  The right column is the receive.  The left column on the left most shift register is the transmit.  I have already opened receive from 0 to 199.99Mhz. Transmit is still trapped with the version 1 band limits.  However, I think I know how to do the MARS mod now.  I just wish I had a small enough soldering iron to be able to solder a diode on the first column, the second to the last vertical position.  That should get me the North American frequencies,and a bit more. 
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N9NIP

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Re: Icom IC-7000 version 1 need help
« Reply #9 on: December 19, 2022, 08:42:06 PM »

Further findings:
I have come to conclude that the Icom IC-7000 version 1, is a version made for Japan, which has a more stringent frequency modification standards than the other regions.  I removed all diodes and put one diode in the first column in the second to the last position for a diode to mount.  This was supposed to open all transmit frequencies from 30khz to 199.99Mhz then 400Mhz to 470Mhz, on all versions, save version 1.  Version 1 only got the receive to be the same but the transmit was still all HF amateur radio frequencies, 144Mhz to 145.99Mhz and 430Mhz to 439.99Mhz.  I removed all diodes and did the reset and now have transmit from 1.6Mhz to 26Mhz.  Then 28Mhz to 30Mhz. (interesting note: No citizen's band for any nation's citizen's band)  VHF is still 144Mhz to 145.99Mhz and UHF is still 430Mhz to 439.99Mhz.  I think there is no way around the VHF and UHF block.  There may be a sell of my new Icom IC-7000 version 1 with opened HF.  I wish it did not happen this way. 
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VR2AX

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Re: Icom IC-7000 version 1 need help
« Reply #10 on: December 20, 2022, 09:05:54 AM »

Hong Kong used to market the 'export' or 'international' vision (#8 ?) and CQ Shop used to wideband or open them if one so wished. I had one many years ago but can't remember if it was standard or open, as I had no real need. Does the mod instruction detail the logic behind the various switching of diodes? I would be surprised if there is any major difference behind the JA version, apart from a manual in Japanese and maybe some labelling. It was quite a fun radio for its day, tricky with DC input voltage and current draw needs, as I now dimly recall. Well done with the perseverance.
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N9NIP

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Re: Icom IC-7000 version 1 need help
« Reply #11 on: December 30, 2022, 11:43:06 AM »

Have you checked MODS.DK?

It appears there is no way to open Icom IC-7000 version 1 for the North American frequencies.  I guess I still have HF frequencies plus 6 metres.  Interesting note:  With no diodes in the radio tuner bank, I was able to get a continuous transmit from 1.6Mhz to 30Mhz, minus 26Mhz to 27.999Mhz.  It did nothing for VHF and UHF transmit.  However, It can receive from 1.6Mhz to 199.99Mhz and 400Mhz to 480Mhz.  It was not really what I wanted. But, I guess I still have 144Mhz to 145.99Mhz all modes, and 430Mhz to 439.99Mhz all mode.
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VR2AX

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Re: Icom IC-7000 version 1 need help
« Reply #12 on: December 31, 2022, 06:50:44 AM »

This bulletin supposedly from ICOM America seems to suggest a different diode layout to that at #7.

https://www.pc5e.nl/downloads/ic7000/Mods/Icom%20-%203668_IC-7000_MARS_CAP_TX_Mod.pdf

Just a thought.
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N9NIP

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Re: Icom IC-7000 version 1 need help
« Reply #13 on: January 11, 2023, 12:08:01 AM »

Unfortunately, there are no diodes in the first bank that controls the frequency limits.  There was only one and I removed it to get the extended receive. It also opened the HF transmit to 1.6Mhz to 26Mhz, then 28Mhz to 30Mhz.  6 meters, 2 meters, and 70cm are still in default with 2 meter and 70 centimeters still crippled.
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K1VCT

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Re: Icom IC-7000 version 1 need help
« Reply #14 on: January 28, 2023, 03:41:09 PM »

Not sure on the IC7000, but what I did for my import IC7300 was to get the online service manual.  In that manual (and hopefully the one for the IC7000), is a parts list.  That parts list shows which diodes are version specific.  Also shows that there is only one microprocessor for all the various versions - the only difference being the diodes.  A bit of sleuthing got me power up to English, and full North American bands.  Hopefully the IC7000 has a common micro, so its only a matter of the diodes.

Another thing that helped was scouring the net for images and video - not necessarily about opening up or other mods, but for repair and service.  Freeze frame and zoom in helped confirm what I hoped was correct from the manual.

Best of luck!
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