I am highly considering purchasing a 7000. Although I have 37 years experience in both working in and teaching electronics(now retired) and have a good RF background, I am a bit touchy when it comes to menu operated transcievers.
1. I have downloaded the 7000 Manual. Perhaps I have missed something but I haven't seen any special order for the menus.
2. I did read where one or two of the menu selection buttons on the front panel can have certain menus "set" for them. Could I set these in a certain order?
3. I'm not so touchy about interpreting the menus once I get to them, but I am very concerned about being able to get to them.
4. This would be my first menu operated rig. I am trying to get back into ham radio after a long absence except for a few spurts.
Thanks Ray
|
Since the nice table of measurements didn't keep its formatting, I uploaded a document to the Files area: 7K TX RF Levels.doc
Steve, W3AHL
toggle quoted message
Show quoted text
--- In ic7000@..., "Steve W3AHL" wrote:
There is quite a variation in gain across the bands even when the unit
is working correctly, for reasons I haven't looked into further. Here
are some measurements of the various levels from the IF, Driver Input,
Driver Output and ANT1 connector output, all taken on the bottom of the
PA board last year on a good 7K to help someone troubleshoot a similar
problem. I need to go back and record the output level right at the
FET's also.
Mode was CW, output power measured with external meter to dummy load was
~100 watts. I used a digital scope with a probe that used a ground
spring clip on the grounding barrel at the tip (instead of a 4" ground
lead). The ground lead picked up too much RF and the measurement varied
a lot depending on the lead position. With the grounding spring clip,
this was eliminated.
Frequency MHz J101 Coax from Main IF Driver Input J101 to J103 Driver
Output J102 to j104 ANT1 At Bottom of PA 1.80 82 mv P-P 1.24 V P-P
12.40 V P-P 202 V P-P 3.58 58 mv 0.70 7.22 202 7.10 72 mv 0.92 8.24
202 14.20 62 mv 1.78 6.48 208 28.40 104 mv 1.08 12.20 216
Steve, W3AHL
--- In ic7000@..., "k2cb_eric" wrote:
Well, in the past when I have seen a transceiver's RF output devices
fail, there is usually NO output power after failure. But that has
always been with the older BiPolar devices, such as 2SC2879, MRF4xx,
etc...
Are the newer Mitsubish RF series mosfets known to fail in such a
peculiar way which is subject to variation in gain (power output) based
on operating frequency?
Eric
K2CB
..snip..
[Non-text portions of this message have been removed]
|
There is quite a variation in gain across the bands even when the unit is working correctly, for reasons I haven't looked into further. Here are some measurements of the various levels from the IF, Driver Input, Driver Output and ANT1 connector output, all taken on the bottom of the PA board last year on a good 7K to help someone troubleshoot a similar problem. I need to go back and record the output level right at the FET's also. Mode was CW, output power measured with external meter to dummy load was ~100 watts. I used a digital scope with a probe that used a ground spring clip on the grounding barrel at the tip (instead of a 4" ground lead). The ground lead picked up too much RF and the measurement varied a lot depending on the lead position. With the grounding spring clip, this was eliminated. Frequency MHz J101 Coax from Main IF Driver Input J101 to J103 Driver Output J102 to j104 ANT1 At Bottom of PA 1.80 82 mv P-P 1.24 V P-P 12.40 V P-P 202 V P-P 3.58 58 mv 0.70 7.22 202 7.10 72 mv 0.92 8.24 202 14.20 62 mv 1.78 6.48 208 28.40 104 mv 1.08 12.20 216 Steve, W3AHL --- In ic7000@..., "k2cb_eric" wrote:
Well, in the past when I have seen a transceiver's RF output devices
fail, there is usually NO output power after failure. But that has always been with the older BiPolar devices, such as 2SC2879, MRF4xx, etc...
Are the newer Mitsubish RF series mosfets known to fail in such a
peculiar way which is subject to variation in gain (power output) based on operating frequency?
Eric
K2CB
..snip..
|
While monitoring radio traffic, my radio occasionally makes a pop, then the sound goes quiet for a few seconds, then the audio rises back to normal. I dont know where to look for the problem.
Thanks in advance.
|
Well, in the past when I have seen a transceiver's RF output devices fail, there is usually NO output power after failure. But that has always been with the older BiPolar devices, such as 2SC2879, MRF4xx, etc...
Are the newer Mitsubish RF series mosfets known to fail in such a peculiar way which is subject to variation in gain (power output) based on operating frequency?
Eric
K2CB
toggle quoted message
Show quoted text
--- In ic7000@..., "dajetzi" wrote:
Hi,
looks like you got the same problem as already
mentioned in this thread.
73 de DO1KLM, Sigi
--- In ic7000@..., "k2cb_eric" wrote:
I picked up a used IC-7000 the other day with a peculiar problem.
The power output is lower than expected, and varies greatly from band to band on hf. VHF and UHF are fine.
The power cord is fine, no fuse voltage drop issues. I am testing the rig on an IFR COM120B and fully equipped service bench. So no antenna load issues.
If I enter the alignment menu, and go thru the full alignment procedure, I see a few issues.
First off, the gain adjustments have issues. I can achieve the spec value for the 14mhz and 28mhz settings, but not the 1.8mhz setting.
Also, when setting the 1w, 25w, 50w, and 100w set points, the 1, 10, 25, and tune settings set just fine, but the 100w and max apo settings will fall short at about 70w.
I do see 100w at times in certain adjustment steps, but not when I should, so the final pa stage appears to be ok. Also, all of the bias alignment steps work fine.
The one step I am questioning is the point where the service manual tells you to preset the four transformer/inductor cans to the top, then adjust the one for max power with the tone generator modulating the rig at level which keeps the power below 50w during the procedure. But there is nowhere in the procedure which refers back to the other 3 cans which you preset to the top.
Upon completion of the full alignment procedure, the radio only puts out 10w on 160m, hardly anything on 40m, and about 70w on 10m.
Now that I think about it, maybe there is a band pass filter issue?
I am missing something somewhere.......
Eric
K2CB
|
Mods for IC7000's microphone
Hello,
i just tested new cell : WM61b (see ebay)
Very fine result
Less than 3 euros... and result as fine as AB5N mods.
I will update my web page on the subjet :
Best regards,
Ludovic - F5PBG.
|
Please reply to n6vg@...
For sale: ICOM Original IC-7000 Service Manual ($40 from ICOM)
ICOM new IC-HM151 ($100+ from HRO) mobile mike for the IC-7000
with the AB5N mod done by AB5N ($45+).
Both for $95 shipped.
|
Re: Strange issues with output power
Yesterday got a call from my radio repair center,
they replace the finals and a few arounding components
and now the TRX is on air again.
Waiting for delivery the nexts days and hope the radio works
as well as before.
73 de DO1KLM, Sigi
toggle quoted message
Show quoted text
--- In ic7000@..., "dajetzi" wrote:
Hello everyone, 14 days ago i ran in the same problem.
Took my radio to a A licensed friend of mine for doing some QSO in JT65 in 20m. RF power set at 30 watt, modulation level adjusted, swr was fine. After a while we noticed very low power on the display.
We did a factory reset but no change.
First thought PA stage get burned, then we made some test.
We measured the following results.
1,9 MHz 0,8 Watt
3,55 MHz 1 Watt
7,05 MHz 5 Watt
10,12 MHz 28 Watt
14,1 MHz 30 Watt
15 MHz 35 Watt
18,1 MHz 30 Watt
21,2 MHz 35 Watt
24,95 MHz 40 Watt
28,5 MHz 60 Watt
50,1 MHz 25 Watt
2m/70cm are not affected.
First it seems the filterboard does something stupid, but then we noticed
the ALC display did not show correct, except on 10m.
Very strange behavior.
I did not try to repair the radio because it is still in warranty.
So radio is sent back to the seller for repair.
Today i got a call from him and apparently the driver stage got toasted.
Now i have to wait until second week in January.
I'm curious what comes out in your research.
73 de DO1KLM
Sigi
|
Hi,
looks like you got the same problem as already
mentioned in this thread.
73 de DO1KLM, Sigi
toggle quoted message
Show quoted text
--- In ic7000@..., "k2cb_eric" wrote:
I picked up a used IC-7000 the other day with a peculiar problem.
The power output is lower than expected, and varies greatly from band to band on hf. VHF and UHF are fine.
The power cord is fine, no fuse voltage drop issues. I am testing the rig on an IFR COM120B and fully equipped service bench. So no antenna load issues.
If I enter the alignment menu, and go thru the full alignment procedure, I see a few issues.
First off, the gain adjustments have issues. I can achieve the spec value for the 14mhz and 28mhz settings, but not the 1.8mhz setting.
Also, when setting the 1w, 25w, 50w, and 100w set points, the 1, 10, 25, and tune settings set just fine, but the 100w and max apo settings will fall short at about 70w.
I do see 100w at times in certain adjustment steps, but not when I should, so the final pa stage appears to be ok. Also, all of the bias alignment steps work fine.
The one step I am questioning is the point where the service manual tells you to preset the four transformer/inductor cans to the top, then adjust the one for max power with the tone generator modulating the rig at level which keeps the power below 50w during the procedure. But there is nowhere in the procedure which refers back to the other 3 cans which you preset to the top.
Upon completion of the full alignment procedure, the radio only puts out 10w on 160m, hardly anything on 40m, and about 70w on 10m.
Now that I think about it, maybe there is a band pass filter issue?
I am missing something somewhere.......
Eric
K2CB
|
check out this page
Graham
|
I picked up a used IC-7000 the other day with a peculiar problem.
The power output is lower than expected, and varies greatly from band to band on hf. VHF and UHF are fine.
The power cord is fine, no fuse voltage drop issues. I am testing the rig on an IFR COM120B and fully equipped service bench. So no antenna load issues.
If I enter the alignment menu, and go thru the full alignment procedure, I see a few issues.
First off, the gain adjustments have issues. I can achieve the spec value for the 14mhz and 28mhz settings, but not the 1.8mhz setting.
Also, when setting the 1w, 25w, 50w, and 100w set points, the 1, 10, 25, and tune settings set just fine, but the 100w and max apo settings will fall short at about 70w.
I do see 100w at times in certain adjustment steps, but not when I should, so the final pa stage appears to be ok. Also, all of the bias alignment steps work fine.
The one step I am questioning is the point where the service manual tells you to preset the four transformer/inductor cans to the top, then adjust the one for max power with the tone generator modulating the rig at level which keeps the power below 50w during the procedure. But there is nowhere in the procedure which refers back to the other 3 cans which you preset to the top.
Upon completion of the full alignment procedure, the radio only puts out 10w on 160m, hardly anything on 40m, and about 70w on 10m.
Now that I think about it, maybe there is a band pass filter issue?
I am missing something somewhere.......
Eric
K2CB
|
Just posting a test msg to make sure I can post to the group from my primary email address.
Jon...
N7OCD
|
Re: [IC-7000] Re: Iambic paddles
Tightwad that I am, when I first got my IC706MKllG, I built a paddle from available material, junk, and scrap. It consisted of a hunk of a 6" stainless ruler, two angle brackets to hold it to a slab of 3/4" plywood, dot and dash contacts made from binding posts and 8-32 bolts, and the dot thumbpiece of scrap plastic and the dash knob from a scrapped hand key. The whole biz worked like a charm for more than a year until I bought my first Vibrokeyer on E-bay. It is now my 2 meter CW paddle on my 706 now in the base since two failures of the 706 HF finals. My second Vibrokeyer is running the mobile IC7000. Net cost, zero, net fun and satisfaction, a bunch. 73, Joe On Tue, Jan 29, 2013 at 6:49 PM, mathprof53575 <wilson@...> wrote: **
I was planning to build a paddle set, then I came across the Black Widow
paddle kit. It is very nice. eham review at
. That says price is now
$57, I think I paid a bit less than $50. It does take a bit of metal
working experience if you want it to look good, mine does really look nice,
but I think almost no metal working background would be needed to make it
work fine.
Possible bad news, though: The page for the source of the kit,
seems to have disappeared from the
web. So the kit may no longer be available. But if you can find it I think
it is a bargain.
Bob Wilson, WA9D
--- In ic7000@..., "James Brock" wrote:
I am getting more interested in operating CW. Right now am doing a lot
listening and practice to try to get my speed up. I am nearly seventy-two
and likely speed will peak out at about 20 wpm. I have a really nice
straight key and, if I say so myself, have a pretty good fist. But my
sending will be a lot more consistent if I use some electronic paddles. I
looked on ebay and ouch..some of them were extremely expensive. I saw a
number of MFJ units in the middle price range. Also some Butternut units.
I am not ashamed to ask for some help from some good CW operators
regarding
making a recommendation for me. I want something nice, needs to last me for
at least twenty more years..! (I qualify as a OT, received my license in
1956.)
One thing that confused me was what they call a magnet tensioning, very
briefly can someone tell me the advantage of them over various spring
tensions. Are they worth the additional $$$.
When I was a novice and for a short period thereafter used a bug and had no
problem.
Jim W7DAU Eugene, OR ( Home of the Mighty University of Oregon Ducks
about fourteen blocks north of my shack! )
-- Joe Weisberger SEMPER FI [Non-text portions of this message have been removed]
|
I was planning to build a paddle set, then I came across the Black Widow paddle kit. It is very nice. eham review at . That says price is now $57, I think I paid a bit less than $50. It does take a bit of metal working experience if you want it to look good, mine does really look nice, but I think almost no metal working background would be needed to make it work fine.
Possible bad news, though: The page for the source of the kit, seems to have disappeared from the web. So the kit may no longer be available. But if you can find it I think it is a bargain.
Bob Wilson, WA9D
toggle quoted message
Show quoted text
--- In ic7000@..., "James Brock" wrote:
I am getting more interested in operating CW. Right now am doing a lot
listening and practice to try to get my speed up. I am nearly seventy-two
and likely speed will peak out at about 20 wpm. I have a really nice
straight key and, if I say so myself, have a pretty good fist. But my
sending will be a lot more consistent if I use some electronic paddles. I
looked on ebay and ouch..some of them were extremely expensive. I saw a
number of MFJ units in the middle price range. Also some Butternut units.
I am not ashamed to ask for some help from some good CW operators regarding
making a recommendation for me. I want something nice, needs to last me for
at least twenty more years..! (I qualify as a OT, received my license in
1956.)
One thing that confused me was what they call a magnet tensioning, very
briefly can someone tell me the advantage of them over various spring
tensions. Are they worth the additional $$$.
When I was a novice and for a short period thereafter used a bug and had no
problem.
Jim W7DAU Eugene, OR ( Home of the Mighty University of Oregon Ducks
about fourteen blocks north of my shack! )
|
Re: I hear audio in the speaker when transmitting
"I have run out of things to check, so I plan on returning the used IC 7000 to the vendor. I am considering buying a new 7000, but I wanted to ask this group if other users hear audio while transmitting.
Thanks in advance for your responses.
John
KC0UUT"
Hi John,
I've had this happen before, and in my case, the problem was solved by better grounding of the IC-7000, which is a bit sensitive to RF.
Good luck.
73
Jeff/wb0m
|
Re: [IC-7000] Filter ringing video
Thanks Dan......nice demo.
Jon...
N7OCD
toggle quoted message
Show quoted text
On Jan 28, 2013, at 8:10 PM, "Dan" <km6cq@...> wrote: I just posted this on you tube. I am making the filters ring on CW and SSB
Hope you all enjoy it.
73, Dan KM6CQ
------------------------------------
Community email addresses:
Post message: IC7000@...
Subscribe: IC7000-subscribe@...
Unsubscribe: IC7000-unsubscribe@...
List owner: IC7000-owner@...
**
"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."
**
Yahoo! Groups Links
|
I just posted this on you tube. I am making the filters ring on CW and SSB
Hope you all enjoy it.
73, Dan KM6CQ
|
Re: [IC-7000] I hear audio in the speaker when transmitting
Hi Working from a bad memory this happened if the mike was plugged in the back but ok in the front or <.> I think there was a mod for this but going back in time now .Morrie
toggle quoted message
Show quoted text
----- Original Message -----
From: lmurphy107@...
To: ic7000@...
Sent: Tuesday, January 29, 2013 8:51 AM
Subject: Re: [IC-7000] I hear audio in the speaker when transmitting
John:
I am not an expert on ic-7k, but I think the unit has a monitor capability.
I n my copy of instruction manual page 87. It recommends "using headphones to prevent feedback " And, "allows you to monitor your transmit signals in any mode through speakers..."
You might try the AF( set), F4, F1 (select mnoitor) crank dial to turn monitor function off, then push menu/grp to get out.
you can also adjust volume level.
Hope that's it?
N0BA ( to really screw up you need a computer, but a processor will do)
----- Original Message -----
From: "notcoldenough" NotColdEnough@...>
To: ic7000@...
Sent: Sunday, January 27, 2013 2:29:40 PM
Subject: [IC-7000] I hear audio in the speaker when transmitting
I just purchased a used IC 7000. When I transmit, I hear my voice in the speaker or headphones. It is a faint crackly reproduction of my voice. The speaker monitor menu is set to "off", so in theory at least, there should be no sound during transmitting.
The problem occurs in all bands, on both my antennas, and even while using my dummy load. The only way I have been able to stop it is to reduce the transmit power to 10%.
I cleaned the fuses, and even tried the power cable from my Kenwood. No difference.
I removed the tuner from the antenna circuit. No change.
Added split core ferrites to all leads on the radio. no change.
One odd thing I noticed is that when I lightly touch the headphone plug, the radio amplifies the sound of my touching the plug and outputs that sound into the speaker. And yes, I verified that headphone was plugged into the correct jack on the radio.
I have run out of things to check, so I plan on returning the used IC 7000 to the vendor. I am considering buying a new 7000, but I wanted to ask this group if other users hear audio while transmitting.
Thanks in advance for your responses.
John
KC0UUT
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2013.0.2890 / Virus Database: 2639/6062 - Release Date: 01/27/13
[Non-text portions of this message have been removed]
|
Re: [IC-7000] I hear audio in the speaker when transmitting
oops, sorry John just saw your comment about monitor.? then again, I thought the IC 2602 actually switched out the signal to the speakers when transmitting and?disabled monitoring?? If it did, then you should not have RFI feedback?? Sorry I did not have b etter answer,
Larry
toggle quoted message
Show quoted text
----- Original Message -----
From: lmurphy107@...
To: ic7000@...
Sent: Monday, January 28, 2013 12:51:32 PM
Subject: Re: [IC-7000] I hear audio in the speaker when transmitting
?
John:
I am not an expert on ic-7k, but I think the unit has a monitor capability.?
I n my copy of instruction manual page 87.? It recommends "using headphones to prevent feedback " ? And, "allows you to monitor your transmit signals in any mode through speakers..."
You might try the AF( set), F4, F1 (select mnoitor) crank dial to turn monitor function off, then push menu/grp to get out.
you can also adjust volume level.
Hope that's it?
N0BA? ( to really screw up you need a computer, but a processor will do)
----- Original Message -----
From: "notcoldenough" NotColdEnough@... >
To: ic7000@...
Sent: Sunday, January 27, 2013 2:29:40 PM
Subject: [IC-7000] I hear audio in the speaker when transmitting
?
I just purchased a used IC 7000. When I transmit, I hear my voice in the speaker or headphones. It is a faint crackly reproduction of my voice. The speaker monitor menu is set to "off", so in theory at least, there should be no sound during transmitting.
The problem occurs in all bands, on both my antennas, and even while using my dummy load. The only way I have been able to stop it is to reduce the transmit power to 10%.
I cleaned the fuses, and even tried the power cable from my Kenwood. No difference.
I removed the tuner from the antenna circuit. No change.
Added split core ferrites to all leads on the radio. no change.
One odd thing I noticed is that when I lightly touch the headphone plug, the radio amplifies the sound of my touching the plug and outputs that sound into the speaker. And yes, I verified that headphone was plugged into the correct jack on the radio.
I have run out of things to check, so I plan on returning the used IC 7000 to the vendor. I am considering buying a new 7000, but I wanted to ask this group if other users hear audio while transmitting.
Thanks in advance for your responses.
John
KC0UUT
[Non-text portions of this message have been removed]
[Non-text portions of this message have been removed]
|
Re: [IC-7000] I hear audio in the speaker when transmitting
John:
I am not an expert on ic-7k, but I think the unit has a monitor capability.?
I n my copy of instruction manual page 87.? It recommends "using headphones to prevent feedback " ? And, "allows you to monitor your transmit signals in any mode through speakers..."
You might try the AF( set), F4, F1 (select mnoitor) crank dial to turn monitor function off, then push menu/grp to get out.
you can also adjust volume level.
Hope that's it?
N0BA? ( to really screw up you need a computer, but a processor will do)
toggle quoted message
Show quoted text
----- Original Message -----
From: "notcoldenough" <NotColdEnough@...>
To: ic7000@...
Sent: Sunday, January 27, 2013 2:29:40 PM
Subject: [IC-7000] I hear audio in the speaker when transmitting
?
I just purchased a used IC 7000. When I transmit, I hear my voice in the speaker or headphones. It is a faint crackly reproduction of my voice. The speaker monitor menu is set to "off", so in theory at least, there should be no sound during transmitting.
The problem occurs in all bands, on both my antennas, and even while using my dummy load. The only way I have been able to stop it is to reduce the transmit power to 10%.
I cleaned the fuses, and even tried the power cable from my Kenwood. No difference.
I removed the tuner from the antenna circuit. No change.
Added split core ferrites to all leads on the radio. no change.
One odd thing I noticed is that when I lightly touch the headphone plug, the radio amplifies the sound of my touching the plug and outputs that sound into the speaker. And yes, I verified that headphone was plugged into the correct jack on the radio.
I have run out of things to check, so I plan on returning the used IC 7000 to the vendor. I am considering buying a new 7000, but I wanted to ask this group if other users hear audio while transmitting.
Thanks in advance for your responses.
John
KC0UUT
|
Steve W3AHL