Date   

Re: [IC-7000] Strange problem

ve4cy
 

Yea, I've managed to turn on the VSC by mistake.  I've bumped it accidentally while in the S2 sub menu.  :)

73 de Jim VE4CY


Re: [IC-7000] Strange problem

WW3S <ww3s@...>
 

Voice squelch as bitten several of us on here, yours truly included.....
 

> On 10/30/2014 11:16:51 AM, AB1DD ab1dd@... [ic7000] (ic7000@...) wrote:
> > Lester,
>
> Make sure the RF gain is set proper, and you don't have voice squelch on.
>
> 73,
> Carl
> AB1DD
>
> Resistance is futile.
> (don't know about reactance, though)
>
> --------------------------------------------
> On Thu, 10/30/14, Lester McClure lesmcclure@... [ic7000] wrote:
>
>  Subject: [IC-7000] Strange problem
>  To: ic7000@...
>  Date: Thursday, October 30, 2014, 10:30 AM
>  
>  Â

>  Say I am on 670kc and go to tune up the am band the radio
>  goes quiet

>  like the antenna was removed then the agc changes level and
>  I get only

>  receiver noise on a new frequency. If I power on the radio
>  and power it

>  back on the new station will come in normal until I change
>  to another

>  frequency.
>
>
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2014.0.4765 / Virus Database: 4040/8477 - Release Date: 10/29/14
>


Re: [IC-7000] Strange problem

AB1DD
 

Lester,

Make sure the RF gain is set proper, and you don't have voice squelch on.

73,
Carl
AB1DD

Resistance is futile.
(don't know about reactance, though)

--------------------------------------------

On Thu, 10/30/14, Lester McClure lesmcclure@comcast.net [ic7000] <ic7000@yahoogroups.com> wrote:

Subject: [IC-7000] Strange problem
To: ic7000@yahoogroups.com
Date: Thursday, October 30, 2014, 10:30 AM

 

Say I am on 670kc and go to tune up the am band the radio
goes quiet

like the antenna was removed then the agc changes level and
I get only

receiver noise on a new frequency. If I power on the radio
and power it

back on the new station will come in normal until I change
to another

frequency.


Strange problem

Lester McClure <lesmcclure@...>
 

My ic-7000 8 years old and has worked fine, however now it a problem. Say I am on 670kc and go to tune up the am band the radio goes quiet like the antenna was removed then the agc changes level and I get only receiver noise on a new frequency. If I power on the radio and power it back on the new station will come in normal until I change to another frequency. This same problems effects all the other bands on the radio. I have not tried to open up the rig as it very hard to work on the small components. I reseated the cable on the front panel to chassis(did not help) and the power is proper.

Where would be a good repair shop to sent the radio?


Re: 2 Meter TX failure

Steve W3AHL
 

I forgot to mention that all of the other 2M TX gain, etc. adjustments should be done also.

Steve, W3AHL


---In ic7000@..., <w3ahl@...> wrote :

I would check Q501, the VHF PA FET.  Use an ohmmeter to compare it to the UHF PA Q401.

If you replace it yourself, make sure you do the 2M idle current adjustments per the service manual (page 4-3).  I've seen several radios with idle currents incorrect, but not enough to cause the FET to fail.  They had high IMD.    If the idle current adjustment value with the new part is MUCH different than the factory value, there may be a problem with the idle current circuit, which should usually be fixed (even if you are able to adjust the idle current within spec.).  

Make sure your DC supply voltage is >13.V4 DC inside the radio while transmitting, before you set the idle currents.  

Steve, W3AHL


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

Hi all,


I was hoping someone could point me in the right direction with this TX fault of my IC-7000


My IC-7000 has been installed in my car for over 3 years now without problems. It's hooked up to a 2m/70cm dualbander and a modified CB vertical on the HF port for 10 meters. It's installed under the driver seat and does get taken out occasionally to remove dust.


The problem started while I was talking to someone on a repeater on 2 meters. The TX power went to 0 and a burning smell filled my car. 2 meters was not completely dead at that point and I was able to end the contact and say that I was having problems. The TX would cut out about 3-4 seconds after pressing the PTT at that point.


Once I got home I took the radio out and connected it to a dummy load. 2m still had the same behaviour (cutting out after 3-4 seconds and going intermittent after that). When I was testing this there was a quiet arc-like noise that completely silenced 2 meters.


At this point I have no power out on 2 meters. The radio does still pull about 10 amps when pressing the PTT and it is responds to power settings or SSB modulation.


I took apart the radio and desoldered the RF board hoping to find an obviously burned component but am unable to spot anything damaged.


All other bands and 2 meter receive are operating just fine.


I'm sorry for the long story, I'm hoping that someone can point me in the right direction.


73,

Jelle PA5AM


Re: 2 Meter TX failure

Steve W3AHL
 


Re: 2 Meter TX failure

Steve W3AHL
 

I would check Q501, the VHF PA FET.  Use an ohmmeter to compare it to the UHF PA Q401.

If you replace it yourself, make sure you do the 2M idle current adjustments per the service manual (page 4-3).  I've seen several radios with idle currents incorrect, but not enough to cause the FET to fail.  They had high IMD.    If the idle current adjustment value with the new part is MUCH different than the factory value, there may be a problem with the idle current circuit, which should usually be fixed (even if you are able to adjust the idle current within spec.).  

Make sure your DC supply voltage is >13.V4 DC inside the radio while transmitting, before you set the idle currents.  

Steve, W3AHL


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

Hi all,


I was hoping someone could point me in the right direction with this TX fault of my IC-7000


My IC-7000 has been installed in my car for over 3 years now without problems. It's hooked up to a 2m/70cm dualbander and a modified CB vertical on the HF port for 10 meters. It's installed under the driver seat and does get taken out occasionally to remove dust.


The problem started while I was talking to someone on a repeater on 2 meters. The TX power went to 0 and a burning smell filled my car. 2 meters was not completely dead at that point and I was able to end the contact and say that I was having problems. The TX would cut out about 3-4 seconds after pressing the PTT at that point.


Once I got home I took the radio out and connected it to a dummy load. 2m still had the same behaviour (cutting out after 3-4 seconds and going intermittent after that). When I was testing this there was a quiet arc-like noise that completely silenced 2 meters.


At this point I have no power out on 2 meters. The radio does still pull about 10 amps when pressing the PTT and it is responds to power settings or SSB modulation.


I took apart the radio and desoldered the RF board hoping to find an obviously burned component but am unable to spot anything damaged.


All other bands and 2 meter receive are operating just fine.


I'm sorry for the long story, I'm hoping that someone can point me in the right direction.


73,

Jelle PA5AM


2 Meter TX failure

email@...
 

Hi all,


I was hoping someone could point me in the right direction with this TX fault of my IC-7000


My IC-7000 has been installed in my car for over 3 years now without problems. It's hooked up to a 2m/70cm dualbander and a modified CB vertical on the HF port for 10 meters. It's installed under the driver seat and does get taken out occasionally to remove dust.


The problem started while I was talking to someone on a repeater on 2 meters. The TX power went to 0 and a burning smell filled my car. 2 meters was not completely dead at that point and I was able to end the contact and say that I was having problems. The TX would cut out about 3-4 seconds after pressing the PTT at that point.


Once I got home I took the radio out and connected it to a dummy load. 2m still had the same behaviour (cutting out after 3-4 seconds and going intermittent after that). When I was testing this there was a quiet arc-like noise that completely silenced 2 meters.


At this point I have no power out on 2 meters. The radio does still pull about 10 amps when pressing the PTT and it is responds to power settings or SSB modulation.


I took apart the radio and desoldered the RF board hoping to find an obviously burned component but am unable to spot anything damaged.


All other bands and 2 meter receive are operating just fine.


I'm sorry for the long story, I'm hoping that someone can point me in the right direction.


73,

Jelle PA5AM


Re: SB-2000 Radio Interface

g4kur@...
 

Thank You for confirming my suspicions. I was advised not to insert the CW jack into the Icom until the SB2000 had "lit up" but have been confused as to whether the SB2k would work at all if I left it out. It would be a pity to damage the Icom. Thanks again, Stu G4KUR.


IC-7000 FAQ

n7ss@...
 

Over the years I have maintained an FAQ for the IC-7000 and I recently updated it.  It's a live Google doc so the latest version is always available at https://docs.google.com/document/d/1b8bAXbMQq02h1kIFeUnFREoHxjpFVJKVRtF60fYA8I4/edit?usp=sharing.  If you see a copy of it posted anywhere as a PDF or other format, I would recommend using the link to insure getting the latest copy since it is generally updated every few months as new, interesting information is available.


73,


Scott N7SS

 


Re: [IC-7000] 7000 PTT does not work

Steve W3AHL
 

A better choice for a replacement switch is the Alps SKQJLBA010 from Mouser.  This is what Icom was shipping as a repair part.  It is rated for 500,000 cycles and is sealed, so dirt won't get inside over time.  The contact design is improved over the original switch, with better wiping action.  This switch has a gray button instead of red for the original.  It costs $1.06, but is worth the extra money.  

Look at the manual soldering specs in the data sheet available on mouser.  The soldering iron tip temperature must be less than 360 C and applied for no more than 3 seconds, otherwise the contacts can be damaged.

Steve, W3AHL

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

I had to replace the mic switch in an Icom HM-133,which I got from Mouser. In fact I ordered 5 of them because they were way less than a dollar, I am thinking around
thirty five cents. I have not crossed the part numbers for the , I ordered Mouser part number 688-SKHHLP (mfg pt nr SKHHLP.PA010)
 
Leanne W1WXS
 

Sent: Monday, October 20, 2014 10:00 AM
Subject: Re: [IC-7000] 7000 PTT does not work
 
 

Thank you all for your feedback. A friend of mine brought his microphone over and tested the radio and it worked fine. Looks like the switch on the microphone needs to be replaced.
 
73,
NIck, KD2LS
 


Re: [IC-7000] 7000 PTT does not work

Leanne Stuart
 

I had to replace the mic switch in an Icom HM-133,which I got from Mouser. In fact I ordered 5 of them because they were way less than a dollar, I am thinking around
thirty five cents. I have not crossed the part numbers for the , I ordered Mouser part number 688-SKHHLP (mfg pt nr SKHHLP.PA010)
 
Leanne W1WXS
 

Sent: Monday, October 20, 2014 10:00 AM
Subject: Re: [IC-7000] 7000 PTT does not work
 
 

Thank you all for your feedback. A friend of mine brought his microphone over and tested the radio and it worked fine. Looks like the switch on the microphone needs to be replaced.
 
73,
NIck, KD2LS
 
 
On Thu, Oct 16, 2014 at 12:15 AM, n1hid1951@... [ic7000] <ic7000@...> wrote:
 
Hi if you go to the AB5N or Icom Mic Guy there a wealth of info on this plus other problems with the HM-151 hand mic.

Rick N1HID Tarheel II and IC-7000 in a Jeep Liberty

 
 
On 10/15/14, Nick Garbidakis nick@... [ic7000]com> wrote:
 
 
I have my 7000 installed on my Jeep with a Little Tarheel II screwdriver antenna.
I have the radio in the back with the second isolated battery that feeds it.
 
After some testing and trials it all looked like it was working fine. I even did a couple of domestic tests on 20 meters.
 
Then I press the microphone and no more transmit, on ANY band, HF to UHF.
I tried everything, every menu but no luck!
The radio transmits using the TUNE button but NOT when I use the microphone.
 
Any ideas will be welcomed.
 
73,
Nick G. KD2LS
 


For Sale: Icom 7000

kf4cnm@...
 

For Sale: Icom 7000

Includes: Icom 7000 radio, manual, original box, Nifty 7000 manual, front panel separation cable OPC-1443,
Front panel mounting MB-105, power cable with Anderson poles, and HM-151 microphone.
Radio from non-smoking environment., Used arely used far listening , Never usedid for trasmitting.
Still working on studying for my General license. Radio beyond my knowledge base. Radio in new condition.
Sale Price: $1000.00 dollars plus buyer pays for sbipping.
kf4cnm@yahoo.com


Re: [IC-7000] 7000 PTT does not work

Charles & Sandra Cohen
 

FWIW --

Before replacing the switch, try opening the case, and spraying some contact cleaner into the switch.   That might work.  If it doesn't work, there's nothing lost.

.          Charles VA7CPC


Re: SB-2000 Radio Interface

da_kaeptn@...
 

I am using this interface since 2 years without any problems.

It is safe untill you connect it to the CW connector, then your radio

could damaged

So you better did not connect the CW cable.

This behavior is also mentioned in some internet shops.


Note on using the SB-2000 with the Icom IC-7000:
The cable SB2K-IC13 has an internal bridge between the keying lines for FSK and CW. This allows the keying with just one line, the RTS signal, and works just fine with the IC-706, IC-7200 etc. But with the IC-7000 a high current is seen over these lines. The effect is that the fan starts immediately after plugging in the cable. In rare cases the IC-7000 might be damaged.

Quick solution: Don't plug in the CW connector from the SB-2000 to the IC-7000. The renders the interface inoperable for telegraphy. Other modes like PSK31, RTTY etc. are not affected.


Re: SB-2000 Radio Interface

g4kur@...
 

Surely someone has tried this.....


Re: [IC-7000] 7000 PTT does not work

Nick Garbidakis
 

Thank you all for your feedback. A friend of mine brought his microphone over and tested the radio and it worked fine. Looks like the switch on the microphone needs to be replaced.

73,
NIck, KD2LS


On Thu, Oct 16, 2014 at 12:15 AM, n1hid1951@... [ic7000] <ic7000@...> wrote:
 

 Hi if you go to the AB5N or Icom Mic Guy there a wealth of info on this plus other problems with the HM-151 hand mic.

Rick N1HID Tarheel II and IC-7000 in a Jeep Liberty

 
 
On 10/15/14, Nick Garbidakis nick@... [ic7000]com> wrote:
 
 

I have my 7000 installed on my Jeep with a Little Tarheel II screwdriver antenna.
I have the radio in the back with the second isolated battery that feeds it.

After some testing and trials it all looked like it was working fine. I even did a couple of domestic tests on 20 meters.

Then I press the microphone and no more transmit, on ANY band, HF to UHF.
I tried everything, every menu but no luck!
The radio transmits using the TUNE button but NOT when I use the microphone.

Any ideas will be welcomed.

73,
Nick G. KD2LS



MDSR uses Notched noise to test transmitter performance

Alex Schwarz
 

Hi Everybody;

MDSR is the software that let you get SDR performance out of your analog RIG. To see how go to our website - see below.

Adam Farson uses a -90dB notch to test the performance of receivers in a test called NPR (noise power ratio). I personally believe it is the best way to test a receiver regardless if it is an SDR or a conventional receiver. Unfortunately a -90dB noise notch with 3kHz bandwidth is very difficult to reproduce. Up to date there is no digital test unit that can do it and we have to use old satellite test equipment with fixed frequencies.
But notched noise has also very interesting test applications for testing the performance of transmitters. The MDSR team has introduced notch filters into the new version of their software (V2.9 Beta). This worked so well that we also decided to use notch filters with white noise on the TX side and see what performance one can get with a 24Bit sound card and the BiLIF up-converter. Although the performance did not come close to the NPR test notch of -90dB the team managed to get a -65dB notch at the output of the BiLiF IF port. The measurement shows the notch output at 14.100MHz for the FT-950 transceiver driven by the BiLiF for 5W and 50W (60W is the max capability for the test set used; HP-8921A). What is noticeable about the measurements is the degradation of the notch depth with higher output power. A higher output produces more IMD (intermod) and fills up the notch with noise. This is a very useful test if you are interested in finding the IMD issues in your transceiver.

For more information please join the MDSR Group;
https://groups.yahoo.com/neo/groups/mdsradio/info

..or check out our website at:
http://users.skynet.be/myspace/mdsr

All the best and please download the V2.9 Beta. It is free for amateur radio use. Available from the group only.

The MDSR Team

 


Re: [IC-7000] 7000 PTT does not work

 

On 15/10/2014 1:08 PM, Nick Garbidakis nick@... [ic7000] wrote:
I have my 7000 installed on my Jeep with a Little Tarheel II screwdriver antenna.
I have the radio in the back with the second isolated battery that feeds it.

After some testing and trials it all looked like it was working fine. I even did a couple of domestic tests on 20 meters.

Then I press the microphone and no more transmit, on ANY band, HF to UHF.
I tried everything, every menu but no luck!
The radio transmits using the TUNE button but NOT when I use the microphone.
Have you tried reducing power to isolate the problem?  Tried a dummy load?  The fact it's all bands and only on Tx still suggests a DC issue (RF issues on UHF are unlikely).

-- 
73 de Tony VK3JED/VK3IRL
http://vkradio.com


Re: [IC-7000] 7000 PTT does not work

Goldtr8 \(KD8NNU\)
 

Try VOX if it works then you msy have a bad PPT switch. 


Sent on the new Sprint Network from my Samsung Galaxy S®4.


-------- Original message --------
From: "Nick Garbidakis nick@... [ic7000]"
Date:10/14/2014 10:08 PM (GMT-05:00)
To: ic7000@...
Subject: [IC-7000] 7000 PTT does not work

 

I have my 7000 installed on my Jeep with a Little Tarheel II screwdriver antenna.
I have the radio in the back with the second isolated battery that feeds it.

After some testing and trials it all looked like it was working fine. I even did a couple of domestic tests on 20 meters.

Then I press the microphone and no more transmit, on ANY band, HF to UHF.
I tried everything, every menu but no luck!
The radio transmits using the TUNE button but NOT when I use the microphone.

Any ideas will be welcomed.

73,
Nick G. KD2LS

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