Date   

Re: [IC-7000] Re: 60 meters mod

JR Smullen
 

     Doesn't work on my 7000...

JR WJ3R


On 2/18/2017 9:40 AM, w4ayk@... [ic7000] wrote:
 

I'm puzzled. I have been using my 7000 on 60 meters for some time and I never did any mod. I loaded the correct frequencies into the memories so I don't have to find them and there it is. No modification at all. And the 60 meter band comes up with the buttons on the right side for band switching.
Gene

Eugene C. Clark W4AYK
Assistant Section Manager, Georgia
ARES Emergency Coordinator, Dougherty County
ARRL, the national organization for Amateur Radio
email: w4ayk@...; Telephone Cell (229)344-1895

----- Original Message -----
From: "w3ahl@... [ic7000]"
To: ic7000@...
Sent: Friday, February 17, 2017 10:37:54 PM
Subject: [IC-7000] Re: 60 meters mod

Just remove D2172 per the instructions. The diagram in the 60M mod document shows parts that aren't really installed in US versions. You'll be fine.

Steve, W3AHL


---In ic7000@..., wrote :

I was thinking of installing my 7000 in the vehicle but saw the post about a needed mod to open 60 meters so the changed channel would work. I took the rig apart and find the diode matrix on my radio is different than shown in the diagram from Icom.
I have the 2 rows of 4 spots for the diodes to be and D2172 is indeed there but the one just to the left of it is missing and in the second row all are missing. I figure this must be a different or maybe later model, SSN 0509284. Because of this I didn't change it and 5.3570 does not Tx.
Thoughts anyone?
73, Ted W3VG


--
__________________________________________________________________
J.R. & Peg Smullen
ICQ#: 147650
Current ICQ status:  
+  More ways to contact me
__________________________________________________________________


Re: [IC-7000] Re: 60 meters mod

w4ayk@...
 

I'm puzzled. I have been using my 7000 on 60 meters for some time and I never did any mod. I loaded the correct frequencies into the memories so I don't have to find them and there it is. No modification at all. And the 60 meter band comes up with the buttons on the right side for band switching.
Gene


Eugene C. Clark W4AYK
Assistant Section Manager, Georgia
ARES Emergency Coordinator, Dougherty County
ARRL, the national organization for Amateur Radio
email: w4ayk@arrl.net; Telephone Cell (229)344-1895

----- Original Message -----
From: "w3ahl@att.net [ic7000]" <ic7000@yahoogroups.com>
To: ic7000@yahoogroups.com
Sent: Friday, February 17, 2017 10:37:54 PM
Subject: [IC-7000] Re: 60 meters mod

Just remove D2172 per the instructions. The diagram in the 60M mod document shows parts that aren't really installed in US versions. You'll be fine.

Steve, W3AHL


---In ic7000@yahoogroups.com, <w3vgted@...> wrote :

I was thinking of installing my 7000 in the vehicle but saw the post about a needed mod to open 60 meters so the changed channel would work. I took the rig apart and find the diode matrix on my radio is different than shown in the diagram from Icom.
I have the 2 rows of 4 spots for the diodes to be and D2172 is indeed there but the one just to the left of it is missing and in the second row all are missing. I figure this must be a different or maybe later model, SSN 0509284. Because of this I didn't change it and 5.3570 does not Tx.
Thoughts anyone?
73, Ted W3VG


Re: [IC-7000] Oscillation

Mark Brueggemann
 

From: "Norm Stewart w6nim@frontier.com [ic7000]" <ic7000@yahoogroups.com>






Seem to be related to the switching frequency of the switching PS
- an MFJ 45 amp supply.

Another thing that comes to mind is can you hear these tones without a computer connected? I wonder if it isn't interference being generated by the PC you're using for digital modes.




Mark K5LXP
Albuquerque, NM


Re: [IC-7000] Oscillation

Norm Stewart
 

Just a long shot -

I have  similar wandering signals on MT63 and PSK31 - fortunately narrow and low enough amplitude to ignore.  Seem to be related to the switching frequency of the switching PS  -  an MFJ 45 amp supply.  Are you on a switcher?  Might try a battery before sending the rig off for repair.


Norm

w6nim




On 2/17/2017 3:42 PM, James Brock jamesbrock@... [ic7000] wrote:
 
I have posted this before. Thought I would check to see if anyone else is having the same problem before sending it back to ICOM for repairs. 

I am gettng a freerunning oscillation that moves back and forth on the waterfall when operating jt65. Some characterists: 

It is considerably worse when the antenna is not tuned to frequency. 

On a test load it virtually explodes  especially on 40 M. Didn't check it that way with other bands. 

When I just crack open the RF gain, and it is not in oscillation, it works rather well.  But even then the oscillation might begin. 

When in oscillation I turn on the preamplifier on the intensity of the oscillation decreases considerabl.  

I reset the unit several times.  It stops the oscillation for a ralatively short period of time but it comes back. 

It is just about unusable on 15 meters, don't know about 12 and 10. 

I tend to think the stage that controls the agc is oscillating.  When the gain is reduced it doesn't oscillate, well not for a while. I don't have a diagram, therefore do no know if they are applying AGC to the RF or IF stage(s). 

Any thoughts from anyone? 

W7DAU

James Brock
541-868-5827 

 DO NOT ACCEPT TEXTING

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Re: 60 meters mod

Steve W3AHL
 

Just remove D2172 per the instructions.  The diagram in the 60M mod document shows parts that aren't really installed in US versions.  You'll be fine.

Steve, W3AHL


---In ic7000@..., <w3vgted@...> wrote :

I was thinking of installing my 7000 in the vehicle but saw the post about a needed mod to open 60 meters so the changed channel would work. I took the rig apart and find the diode matrix on my radio is different than shown in the diagram from Icom.

I have the 2 rows of 4 spots for the diodes to be and D2172 is indeed there but the one just to the left of it is missing and in the second row all are missing. I figure this must be a different or maybe later model, SSN 0509284. Because of this I didn't change it and 5.3570 does not Tx.

Thoughts anyone?

73, Ted W3VG


Oscillation

James Brock <jamesbrock@...>
 

I have posted this before. Thought I would check to see if anyone else is having the same problem before sending it back to ICOM for repairs. 

I am gettng a freerunning oscillation that moves back and forth on the waterfall when operating jt65. Some characterists: 

It is considerably worse when the antenna is not tuned to frequency. 

On a test load it virtually explodes  especially on 40 M. Didn't check it that way with other bands. 

When I just crack open the RF gain, and it is not in oscillation, it works rather well.  But even then the oscillation might begin. 

When in oscillation I turn on the preamplifier on the intensity of the oscillation decreases considerabl.  

I reset the unit several times.  It stops the oscillation for a ralatively short period of time but it comes back. 

It is just about unusable on 15 meters, don't know about 12 and 10. 

I tend to think the stage that controls the agc is oscillating.  When the gain is reduced it doesn't oscillate, well not for a while. I don't have a diagram, therefore do no know if they are applying AGC to the RF or IF stage(s). 

Any thoughts from anyone? 

W7DAU

James Brock
541-868-5827 

 DO NOT ACCEPT TEXTING


Re: [IC-7000] 60 meters mod

Richard
 

My thoughts are that the parts are very tiny and this is very very close work.  

C. Richard Pumphrey


On Feb 17, 2017, at 1:49 PM, Ted Leonard w3vgted@... [ic7000] <ic7000@...> wrote:

 

I was thinking of installing my 7000 in the vehicle but saw the post about a needed mod to open 60 meters so the changed channel would work. I took the rig apart and find the diode matrix on my radio is different than shown in the diagram from Icom.

I have the 2 rows of 4 spots for the diodes to be and D2172 is indeed there but the one just to the left of it is missing and in the second row all are missing. I figure this must be a different or maybe later model, SSN 0509284. Because of this I didn't change it and 5.3570 does not Tx.

Thoughts anyone?

73, Ted W3VG


60 meters mod

 

I was thinking of installing my 7000 in the vehicle but saw the post about a needed mod to open 60 meters so the changed channel would work. I took the rig apart and find the diode matrix on my radio is different than shown in the diagram from Icom.

I have the 2 rows of 4 spots for the diodes to be and D2172 is indeed there but the one just to the left of it is missing and in the second row all are missing. I figure this must be a different or maybe later model, SSN 0509284. Because of this I didn't change it and 5.3570 does not Tx.

Thoughts anyone?

73, Ted W3VG


Re: [IC-7000] Oscillation n front end

Paul Williams
 

Try sending it to Matt at Icom in Michigan. Here is their website  http://sarts1.com. Excellent repair work and customer service. Far better than Icom in Kalifornia.

Paul

-------- Original message --------
From: "James Brock jamesbrock@... [ic7000]" <ic7000@...>
Date: 2/11/17 12:21 AM (GMT-05:00)
To: ic7000@...
Subject: Re: [IC-7000] Oscillation n front end

 

Did that, the oscillation increases considerably.  The agc is pulling up some amplifier.  Conversely, when connected to an antenna, activating the preamp the intensity of the oscillation decreases.  The oscilation is free running.  

Turning the rig off and then on the oscillation stops for a short while and then returns.  

Does that give anyone a clue? 

As I said, ICOM returned it as repaired but it is as bad now as when I sent it to them. I sure would like to tell them where to look to resolve the problem. 

Any help is appreciated. 
 
James Brock
541-868-5827 

 DO NOT ACCEPT TEXTING



On Friday, February 10, 2017 7:32 PM, "James Ashworth wb4hxf@... [ic7000]" <ic7000@...> wrote:


 
Try connecting a 50 ohm dummy load and see if the signal is still there.



From: "James Brock jamesbrock@... [ic7000]" <ic7000@...>
To: "IC7000@..." <IC7000@...>
Sent: Thursday, February 9, 2017 4:16 AM
Subject: [IC-7000] Oscillation n front end



Sent the IC7000 into ICOM for repairs and it came back the same.  I operate mostely on jt65 and can see a carrier running through the bandpass.  It is somehow associated with the AGC.  When the carrier comes on turnig on the preamp decreases the carrier level.  Using a test antenna the carrier increases considerably, of course it would when the agc is trying to increase gain.  Turning the unit off and on  turns the carrier of for a short while and it comes back.  Increasing the heat of the unit, covering the fan, causes the carrier to go to a higher value on the jt65 waterfall.  It appears to be higher on 17 meters but is on all b ands.  

HELP, anyone have a random carrier running through the bandpass of your unit?  If so what did you do about it?  I don't have a spectrum analyzer anymore or I would try to trace this down myself.  

Going back to the repair facilities early next week with some off-screen photos.  

W7DAU
 
James Brock
541-868-5827 

 DO NOT ACCEPT TEXTING








Re: [IC-7000] Oscillation n front end

James Brock <jamesbrock@...>
 

Did that, the oscillation increases considerably.  The agc is pulling up some amplifier.  Conversely, when connected to an antenna, activating the preamp the intensity of the oscillation decreases.  The oscilation is free running.  

Turning the rig off and then on the oscillation stops for a short while and then returns.  

Does that give anyone a clue? 

As I said, ICOM returned it as repaired but it is as bad now as when I sent it to them. I sure would like to tell them where to look to resolve the problem. 

Any help is appreciated. 
 
James Brock
541-868-5827 

 DO NOT ACCEPT TEXTING



On Friday, February 10, 2017 7:32 PM, "James Ashworth wb4hxf@... [ic7000]" wrote:


 
Try connecting a 50 ohm dummy load and see if the signal is still there.



From: "James Brock jamesbrock@... [ic7000]"
To: "IC7000@..."
Sent: Thursday, February 9, 2017 4:16 AM
Subject: [IC-7000] Oscillation n front end



Sent the IC7000 into ICOM for repairs and it came back the same.  I operate mostely on jt65 and can see a carrier running through the bandpass.  It is somehow associated with the AGC.  When the carrier comes on turnig on the preamp decreases the carrier level.  Using a test antenna the carrier increases considerably, of course it would when the agc is trying to increase gain.  Turning the unit off and on  turns the carrier of for a short while and it comes back.  Increasing the heat of the unit, covering the fan, causes the carrier to go to a higher value on the jt65 waterfall.  It appears to be higher on 17 meters but is on all bands.  

HELP, anyone have a random carrier running through the bandpass of your unit?  If so what did you do about it?  I don't have a spectrum analyzer anymore or I would try to trace this down myself.  

Going back to the repair facilities early next week with some off-screen photos.  

W7DAU
 
James Brock
541-868-5827 

 DO NOT ACCEPT TEXTING








Re: [IC-7000] Oscillation n front end

James Ashworth <wb4hxf@...>
 

Try connecting a 50 ohm dummy load and see if the signal is still there.



From: "James Brock jamesbrock@... [ic7000]"
To: "IC7000@..." Sent: Thursday, February 9, 2017 4:16 AM
Subject: [IC-7000] Oscillation n front end



Sent the IC7000 into ICOM for repairs and it came back the same.  I operate mostely on jt65 and can see a carrier running through the bandpass.  It is somehow associated with the AGC.  When the carrier comes on turnig on the preamp decreases the carrier level.  Using a test antenna the carrier increases considerably, of course it would when the agc is trying to increase gain.  Turning the unit off and on  turns the carrier of for a short while and it comes back.  Increasing the heat of the unit, covering the fan, causes the carrier to go to a higher value on the jt65 waterfall.  It appears to be higher on 17 meters but is on all bands.  

HELP, anyone have a random carrier running through the bandpass of your unit?  If so what did you do about it?  I don't have a spectrum analyzer anymore or I would try to trace this down myself.  

Going back to the repair facilities early next week with some off-screen photos.  

W7DAU
 
James Brock
541-868-5827 

 DO NOT ACCEPT TEXTING






Oscillation n front end

James Brock <jamesbrock@...>
 

Sent the IC7000 into ICOM for repairs and it came back the same.  I operate mostely on jt65 and can see a carrier running through the bandpass.  It is somehow associated with the AGC.  When the carrier comes on turnig on the preamp decreases the carrier level.  Using a test antenna the carrier increases considerably, of course it would when the agc is trying to increase gain.  Turning the unit off and on  turns the carrier of for a short while and it comes back.  Increasing the heat of the unit, covering the fan, causes the carrier to go to a higher value on the jt65 waterfall.  It appears to be higher on 17 meters but is on all bands.  

HELP, anyone have a random carrier running through the bandpass of your unit?  If so what did you do about it?  I don't have a spectrum analyzer anymore or I would try to trace this down myself.  

Going back to the repair facilities early next week with some off-screen photos.  

W7DAU
 
James Brock
541-868-5827 

 DO NOT ACCEPT TEXTING


Re: Accidentally Shorted Radio with LDG Tuner Cable

kdbrady1963@...
 

I replaced the 5 amp fuse behind the control head and now it powers up. However, I am unable to write any data to the radio. Although, in error, I was able to write an empty codeplug, without the ability to send any channel information.

I have verified the radio ID...70h, baud rate is auto and transceiver is on. However, as soon as I start to send the data, the transceiver turns off.

I appreciate the help that I have found here. Does anyone have an solution for this issue?

73
Keith
KB0CAP


Re: OPC-1444 and mic extention cable

m0wao
 

Hi,

If M0AFJ has no interest in your OPC then I would like to get them.


73 M0WAO de Biton
 


Re: [IC-7000] OPC-1444 and mic extention cable

Tim Hague <m0afj@...>
 

I've sent you a PM George

Best Regards
Tim Hague


On 8 Feb 2017, at 18:25, George McHugh gi4srq@... [ic7000] <ic7000@...> wrote:

 

On 07/02/2017 10:00, m0afj@... [ic7000] wrote:
 

Does anyone know of an alternative supplier of the OPC-144 in Europe please, and can you use a CAT 6 cable for the mic extension?.

Hi M0AFJ,
I was interested to read your query about the above items.
I have an OPC-1443 (3.5m), an OPC-1444 (5m) and an OPC-647 (2.5m) Mic Extension Cable which I no longer use.
If you're having difficulty in obtaining any of these let me know, and I would part with any or all of them.
73 George GI4SRQ


Re: [IC-7000] OPC-1444 and mic extention cable

George McHugh <gi4srq@...>
 

On 07/02/2017 10:00, m0afj@... [ic7000] wrote:
 

Does anyone know of an alternative supplier of the OPC-144 in Europe please, and can you use a CAT 6 cable for the mic extension?.

Hi M0AFJ,
I was interested to read your query about the above items.
I have an OPC-1443 (3.5m), an OPC-1444 (5m) and an OPC-647 (2.5m) Mic Extension Cable which I no longer use.
If you're having difficulty in obtaining any of these let me know, and I would part with any or all of them.
73 George GI4SRQ


Re: problem with separation cable

Steve W3AHL
 

It will probably be hard to find the right type of 5-pair shielded cable in local stores.  I haven't looked at the interface signals, so I don't know what the data rate is for the serial link and what type of drivers are used.  Same for the YY-VIDEO signal.  Without that info it is difficult to guess how long of a cable could be used and what type of cable is needed for a given length.  

It should be low capacitance per meter for the twisted pair and to ground shield -- 50 pf. is what CAT5 cable usually is.  A little higher would probably be OK.  Old-style telephone wire probably would NOT be OK.

I assume the factory cable is shielded so a longer version should be shielded also, with the shielding connected between the connectors.  Your UTP cable would probably result in RFI noise on the display and erratic display operation due to noise on the serial control link.  

Shielded CAT5 cable is available (STP) and it should be used instead.  It is also what I use for extending the MIC cables.  However I custom wire those also so that critical signals are on twisted pairs.  A standard CAT5 cable isn't paired right to put the mic audio and its mic ground on the same pair and can result in RFI in some mobile installations.

Steve, W3AHL


---In ic7000@..., <sv2hws@...> wrote :

Thank you Steve for the explanation of the pin outs

I was thinking of using 2 UTP cables since I have many lying around
I would of course leave 3 pairs free
But your suggestion for 5 pair cable is better and I think I will try to find such a cable on my next visit to an electronics shop

How long do you believe I could make the cable so that the separation would work without problem?
I have read here about some people using two separation cables in series without problem but they did not mention if they were the long 5m (16ft) or the short 3m.

When I had the problem with old cable I did CPU reset more than once but the problem remained.
Now I have a new cable that works fine.

Triantafyllos, sv2hws


Re: [IC-7000] Re: OPC-1444 and mic extention cable

Ian Baker
 

Yes – I purchased one from HRO in the USA.  You can pay by credit card and they will ship anywhere in the world…

73 IanB de VK3IJB/N3IAN

 

From: on behalf of "sv2hws@... [ic7000]"
Reply-To:
Date: Wednesday, 8 February 2017 at 08:06
To:
Subject: [IC-7000] Re: OPC-1444 and mic extention cable

 

 

Hello

I used cat 5e UTP for mic extension without problem

Regarding the OPC-1444 I was searching for it the past weeks and could not find it anywhere in Europe

You can get it on www.hamradio.com which is in USA but does international shipping
It will get really expensive though with bank transfer fees , shipping cost , customs maybe


Re: OPC-1444 and mic extention cable

sv2hws@...
 

Hello

I used cat 5e UTP for mic extension without problem

Regarding the OPC-1444 I was searching for it the past weeks and could not find it anywhere in Europe

You can get it on www.hamradio.com which is in USA but does international shipping
It will get really expensive though with bank transfer fees , shipping cost , customs maybe


Re: problem with separation cable

sv2hws@...
 

Thank you Steve for the explanation of the pin outs

I was thinking of using 2 UTP cables since I have many lying around
I would of course leave 3 pairs free
But your suggestion for 5 pair cable is better and I think I will try to find such a cable on my next visit to an electronics shop

How long do you believe I could make the cable so that the separation would work without problem?
I have read here about some people using two separation cables in series without problem but they did not mention if they were the long 5m (16ft) or the short 3m.

When I had the problem with old cable I did CPU reset more than once but the problem remained.
Now I have a new cable that works fine.

Triantafyllos, sv2hws

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