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Re: [IC-7000] Re: IC7000 Internal Clock Problem

Charles Scott
 

All:

If I read the service manual correctly, the real time clock in the IC7000 is an RX-4581NB-F clock chip that has it's own internal reference oscillator at 32.758 KHz.

The way it's configured, the oscillator output pin is disabled to reduce current when the radio is off (chip should be drawing about .8 uA), so you can't sample that reference. I also don't see any facility for trimming that reference in the specs for the chip.

So, we seem to be kind of stuck with whatever rate the thing is running at. The Specs mention that this chip is available for tighter tolerance to 1 min per month (which I don't think is all that good), but I suspect we don't have that in the 7000 so it's probably worse.

The RTC is powered by the 3.3V buss and has a small backup battery to power it when the radio is off.

That's all I know.

Chuck - N8DNX
Re: [IC-7000] Re: IC7000 Internal Clock Problem

 

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I'd bet many of us waste more than a minute on the Internet and elsewise everyday.?


Mark


Sent from my Verizon Wireless 4G LTE smartphone



-------- Original message --------
From: Philip <pcsalley@...>
Date: 11/07/2013 8:20 AM (GMT-07:00)
To: ic7000@...
Subject: [IC-7000] Re: IC7000 Internal Clock Problem


?Right on Alex, LOL, but just looked at display here and the darned clock is off a whole minute (slow).? Have no idea when last adjusted though probably at initial setup at acquisition 3/29/2010.?? Phil / K4PO

?

?
Re: Power cord

 

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I do the same with rigs here Alex, cut off the power lead and add power pole at useable length.? Also add power pole to removed portion just in case and/or for the next owner whenever.? I also remove those blasted pigtail molex thingies and replace with power pole.? Much neater and ready for ARES duty.? Phil / K4PO

?

?

?
Re: IC7000 Internal Clock Problem

 

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?Right on Alex, LOL, but just looked at display here and the darned clock is off a whole minute (slow).? Have no idea when last adjusted though probably at initial setup at acquisition 3/29/2010.?? Phil / K4PO

?

?
Re: [IC-7000] IC7000 Internal Clock Problem

 

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If accuracy is that important, pony up for a gps locked rubidium standard.


Mark



On 11/7/2013 7:32 AM, Rich Matos wrote:


they advertised a clock
you thought that would be great
whats wrong with wanting it to be accurate?
"Rich"


On 11/6/2013 2:01 PM, John A Diefenbach wrote:
???
Alex, you do have a sense of humor.

jd/K1TLV


On Wed, Nov 6, 2013 at 2:00 PM, Alex Netherton <anetherton@...> wrote:
???
From 1979, the time of my licensing, to May of this year, I never had a rig with a clock. Most had tubes. Does the rig work? Do you make contacts? Get good reports? Very sorry, but I fail to see the problem.
(Laughing a little bit... ;_) )

73 de KC4BO

Alex Netherton


On Wed, Nov 6, 2013 at 11:53 AM, Rick Barron <va3wu1@...> wrote:
???

Same problem here . I await any answer you may get because I have never pursued the matter but should have.
VA3WU
Rick

On 2013-11-06 11:50 AM, "David Fox" <davefox73@...> wrote:
???

Has anyone else experienced a problem with the clock on the display losing time? After setting the time to WWV, I lose a minute about every two weeks and have to reset the clock. Rig is used as a base station and never used mobile. IC7000 is less than a year old. This there a simple fix for this problem.

Dave
W3FOX
Sent from my iPad






This email is free from viruses and malware because protection is active.



Re: IC7000 Internal Clock Problem

Jeff Freedman
 

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It would appear from the thread that more than the rig’s clock is off!

?

de K7JF

?

______________________________________________________

???????????????????????????????? jeff freedman? |? gig harbor, washington

??????????????? [p] 253-509-0745? |? [f] 253-509-0745? |c] 253-377-5278

?

?

?

?
Re: [IC-7000] IC7000 Internal Clock Problem

Rich Matos
 

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they advertised a clock
you thought that would be great
whats wrong with wanting it to be accurate?
"Rich"


On 11/6/2013 2:01 PM, John A Diefenbach wrote:
???
Alex, you do have a sense of humor.

jd/K1TLV


On Wed, Nov 6, 2013 at 2:00 PM, Alex Netherton <anetherton@...> wrote:
???
From 1979, the time of my licensing, to May of this year, I never had a rig with a clock. Most had tubes. Does the rig work? Do you make contacts? Get good reports? Very sorry, but I fail to see the problem.
(Laughing a little bit... ;_) )

73 de KC4BO

Alex Netherton


On Wed, Nov 6, 2013 at 11:53 AM, Rick Barron <va3wu1@...> wrote:
???

Same problem here . I await any answer you may get because I have never pursued the matter but should have.
VA3WU
Rick

On 2013-11-06 11:50 AM, "David Fox" <davefox73@...> wrote:
???

Has anyone else experienced a problem with the clock on the display losing time? After setting the time to WWV, I lose a minute about every two weeks and have to reset the clock. Rig is used as a base station and never used mobile. IC7000 is less than a year old. This there a simple fix for this problem.

Dave
W3FOX
Sent from my iPad






This email is free from viruses and malware because protection is active.


Re: [IC-7000] IC7000 Internal Clock Problem

 

I think the clock is voltage sensitive, but I am probably wrong!

JIM
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

From: Chuck Schultz
To: ic7000@...
Sent: Thursday, November 7, 2013 5:33 AM
Subject: Re: [IC-7000] IC7000 Internal Clock Problem

?
Not mine?????? Today it is only off one minute or less ............I reset it just last Sunday with the rest of the house clocks .................With my ProII I learned that the secret is to use the clock only as a 24 hour piece .? The hour is always correct ! ? After 35 years I have? a shack clock that keeps fairly perfect time , the one on the radio only keeps me from having to do some of that new math when making scheds around or out of this world . ?? There could be an advantage to a slow clock , when my time is called I wish to arrive late! ? ?? Chuck ?? Wq5B?
On 11/6/2013 7:35 PM, Monroe Wightman wrote:
?
My clock is off 3 mins. after 15 months.
?
Monroe AF6JC
----- Original Message -----
Sent: Wednesday, November 06, 2013 8:53 AM
Subject: Re: [IC-7000] IC7000 Internal Clock Problem

?
Same problem here . I await any answer you may get because I have never pursued the matter but should have.
VA3WU
Rick
On 2013-11-06 11:50 AM, "David Fox" <davefox73@...> wrote:
?
Has anyone else experienced a problem with the clock on the display losing time? After setting the time to WWV, I lose a minute about every two weeks and have to reset the clock. Rig is used as a base station and never used mobile. IC7000 is less than a year old. This there a simple fix for this problem.

Dave
W3FOX
Re: [IC-7000] IC7000 Internal Clock Problem

Chuck Schultz
 

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Not mine?????????????????? Today it is only off one minute or less ............I reset it just last Sunday with the rest of the house clocks .................With my ProII I learned that the secret is to use the clock only as a 24 hour piece .??? The hour is always correct ! ??? After 35 years I have??? a shack clock that keeps fairly perfect time , the one on the radio only keeps me from having to do some of that new math when making scheds around or out of this world . ?????? There could be an advantage to a slow clock , when my time is called I wish to arrive late! ??? ?????? Chuck ?????? Wq5B???
On 11/6/2013 7:35 PM, Monroe Wightman wrote:

???

My clock is off 3 mins. after 15 months.
???
Monroe AF6JC
----- Original Message -----
Sent: Wednesday, November 06, 2013 8:53 AM
Subject: Re: [IC-7000] IC7000 Internal Clock Problem

???

Same problem here . I await any answer you may get because I have never pursued the matter but should have.
VA3WU
Rick

On 2013-11-06 11:50 AM, "David Fox" <davefox73@...> wrote:
???

Has anyone else experienced a problem with the clock on the display losing time? After setting the time to WWV, I lose a minute about every two weeks and have to reset the clock. Rig is used as a base station and never used mobile. IC7000 is less than a year old. This there a simple fix for this problem.

Dave
W3FOX
Re: IC7000 Internal Clock Problem

[email protected]
 

I noticed mine is temperature sensitive. ?I have seen it run a bit fast or slow based on whether it was in teh house or the car (in the cold).


I assume the clock is a module Icom bought which means there's likely nothing that can be done to address it. It's not terrible or particularly important to me so I never really worried about it. ?It's fine for general time and I always have a PC available for accurate time. ?


At one point I thought about writing a little utility to grab the time from a connected PC or NTP server and update the clock in the radio. ?The CI-V instructions exist for this (see page 144 in the manual). ?It just keeps landing low on my project list.


Scott N7SS



---In ic7000@..., <davefox73@...> wrote:

Has anyone else experienced a problem with the clock on the display losing time? After setting the time to WWV, I lose a minute about every two weeks and have to reset the clock. Rig is used as a base station and never used mobile. IC7000 is less than a year old. This there a simple fix for this problem.

Dave
W3FOX
Re: [IC-7000] IC7000 Internal Clock Problem

 

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On 7/11/13 6:00 AM, Alex Netherton wrote:
From 1979, the time of my licensing, to May of this year, I never had a rig with a clock. Most had tubes. Does the rig work? Do you make contacts? Get good reports? Very sorry, but I fail to see the problem.
I must admit I never look at the clock on my IC-7000.??? I'm more likely to look at the computer or VCR (used for ATV reception) than the radio for the time.

-- 
73 de Tony VK3JED/VK3IRL

Re: IC7000 Internal Clock Problem

[email protected]
 

?Hi Dave,

?

Mine gains about a minute or so a month.? Its about as good as a watch from

the dollar store.? I depend on it during contests and? reset it just before the

event begins.

?

Regards,

Gre W7MC

View Source
<Has anyone else experienced a problem with the clock on the display losing time? After setting the time to WWV, I lose a minute about every two weeks and have to reset the clock. Rig is used as a base station and never used mobile. IC7000 is less than a year old. This there a simple fix for this problem.

Dave
W3FOX
>
Re: Power cord

 

1) as Mac said, car battery looong way from radio
2) if a short develops anywhere along the cable leading to the radio and is before the fuses then the entire cable length up to the fault will bear the entire amperage your supply can give which means one thing. Fire.


Philip 5B4ZN
In ic7000@..., <anetherton@...> wrote:

Hi folks;
Just a couple of questions for those among us who use "modern" DC powered equipment, since I labored my last 34 years as a tube rig user, and never had to worry about 12 volts except for low power mobile rigs and handhelds.

I have an IC-700 and a FT-950 (Icom and Yaesu) that are both 12 (or 13.8) volts. Upon unpacking them, I discovered loooong power wires (about 8 or more feet) of a very sturdy (probably 10) gauge, and they had a fuse in both positive and negative lines, and right next to the place where they would hook up to the power supply. Most rigs I have owned in the past had fuses nearer to the rig, including the Yaesu FT-7100M I got a week or so ago.

I took the power cable on the IC-7K and transmogrified it, shortening it, and placing a Power Pole inline (due to Ares going to Power Poles, I used them). I do NOT need a 10 foot power cord!

Now, the Icom manual warned against messing with the power cable, warning about reverse polarity, but I figure I am old enough, been a Ham long enough (34 years) to keep the polarity right, and if I don't, well, I should have. The "new" cable works fine, BTW... so far.

Questions 1. Why is the cable on both these radios so long? Most power supplies are only a few feet away, for gosh sakes. 2. Why are the fuses on the power supply end of the cable? I kept it that way, though do not understand it. 3. What gauge of wire is needed for 100 watts on 12 volts? By (probably flawed) figuring, a 100 watt radio is going to be about 50 to 60 per-cent efficient, so the draw is going to be about 16 amps. Many charts show a value of around 14 gauge for 6 feet. I am curious about what gauge I need for a run of 6 feet at less than 20 amps.
3. Why are the fuses located next to the power supply, and why are there two?
4. Why can't they make the rigs with an internal PS, and use 120v, especially ones like the 950, as I am NOT going to take that giant out mobile, even though it has a handle and feet on it!

Well, enough for this evening

73 de KC4BO

Alex Netherton
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Location: Calgary,CANADA
IC-7000 Power cord

 

Alex,

The power cord is long so as to allow direct connection to a vehicle battery.

The fuses are located at the battery to protect against a short wherein the
cable would rub up against the chassis of the car. Typically this happens
going through the firewall.

Fuses are included on the negative side in the event of a rare condition in
which the vehicle tries to "find ground" through the negative lead of the
power line to the radio.

Be Well,

Tim Colbert K3HX

(30+ years in the 2-way radio industry...HI!)



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Re: [IC-7000] Power cord

 

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The car battery is usually a LONGGG way from the radio.

73 - Mac, K2GKK/5
Oklahoma City


On Nov 6, 2013, at 21:11, "Alex Netherton" <anetherton@...> wrote:

Hi folks;
Just a couple of questions for those among us who use "modern" DC powered equipment, since I labored my last 34 years as a tube rig user, and never had to worry about 12 volts except for low power mobile rigs and handhelds.

I have an IC-700 and a FT-950 (Icom and Yaesu) that are both 12 (or 13.8) volts. Upon unpacking them, I discovered loooong power wires (about 8 or more feet) of a very sturdy (probably 10) gauge, and they had a fuse in both positive and negative lines, and right next to the place where they would hook up to the power supply. Most rigs I have owned in the past had fuses nearer to the rig, including the Yaesu FT-7100M I got a week or so ago.

I took the power cable on the IC-7K and transmogrified it, shortening it, and placing a Power Pole inline (due to Ares going to Power Poles, I used them). I do NOT need a 10 foot power cord!

Now, the Icom manual warned against messing with the power cable, warning about reverse polarity, but I figure I am old enough, been a Ham long enough (34 years) to keep the polarity right, and if I don't, well, I should have. The "new" cable works fine, BTW... so far.

Questions 1. Why is the cable on both these radios so long? Most power supplies are only a few feet away, for gosh sakes. 2. Why are the fuses on the power supply end of the cable? I kept it that way, though do not understand it. 3. What gauge of wire is needed for 100 watts on 12 volts? By (probably flawed) figuring, a 100 watt radio is going to be about 50 to 60 per-cent efficient, so the draw is going to be about 16 amps. Many charts show a value of around 14 gauge for 6 feet. I am curious about what gauge I need for a run of 6 feet at less than 20 amps.
3. Why are the fuses located next to the power supply, and why are there two?
4. Why can't they make the rigs with an internal PS, and use 120v, especially ones like the 950, as I am NOT going to take that giant out mobile, even though it has a handle and feet on it!

Well, enough for this evening

73 de KC4BO

Alex Netherton
Power cord

Alex Netherton
 

Hi folks;
Just a couple of questions for those among us who use "modern" DC powered equipment, since I labored my last 34 years as a tube rig user, and never had to worry about 12 volts except for low power mobile rigs and handhelds.

I have an IC-700 and a FT-950 (Icom and Yaesu) that are both 12 (or 13.8) volts. Upon unpacking them, I discovered loooong power wires (about 8 or more feet) of a very sturdy (probably 10) gauge, and they had a fuse in both positive and negative lines, and right next to the place where they would hook up to the power supply. Most rigs I have owned in the past had fuses nearer to the rig, including the Yaesu FT-7100M I got a week or so ago.

I took the power cable on the IC-7K and transmogrified it, shortening it, and placing a Power Pole inline (due to Ares going to Power Poles, I used them). I do NOT need a 10 foot power cord!

Now, the Icom manual warned against messing with the power cable, warning about reverse polarity, but I figure I am old enough, been a Ham long enough (34 years) to keep the polarity right, and if I don't, well, I should have. The "new" cable works fine, BTW... so far.

Questions 1. Why is the cable on both these radios so long? Most power supplies are only a few feet away, for gosh sakes. 2. Why are the fuses on the power supply end of the cable? I kept it that way, though do not understand it. 3. What gauge of wire is needed for 100 watts on 12 volts? By (probably flawed) figuring, a 100 watt radio is going to be about 50 to 60 per-cent efficient, so the draw is going to be about 16 amps. Many charts show a value of around 14 gauge for 6 feet. I am curious about what gauge I need for a run of 6 feet at less than 20 amps.
3. Why are the fuses located next to the power supply, and why are there two?
4. Why can't they make the rigs with an internal PS, and use 120v, especially ones like the 950, as I am NOT going to take that giant out mobile, even though it has a handle and feet on it!

Well, enough for this evening

73 de KC4BO

Alex Netherton
Re: [IC-7000] IC7000 Internal Clock Problem

 

On Wed, 6 Nov 2013 14:00:05 -0500, Alex Netherton wrote:

From 1979, the time of my licensing, to May of this year, I never had a rig
with a clock. Most had tubes. Does the rig work? Do you make contacts? Get
good reports? Very sorry, but I fail to see the problem.
(Laughing a little bit... ;_) )
I'm in this camp too, except for one thing. If the "feature" is there, it
should work. Period. Like you, I don't think it has a good use at all, and any
clock that doesn't have at least a 60 cycle source to help it keep time, is
questionable anyway. Why would anyone rely on it for any long term time
keeping?

Gary
--
Web:
NodeOp Page:
Node 3055:

Re: [IC-7000] IC7000 Internal Clock Problem

 

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My clock is off 3 mins. after 15 months.
?
Monroe AF6JC

----- Original Message -----
Sent: Wednesday, November 06, 2013 8:53 AM
Subject: Re: [IC-7000] IC7000 Internal Clock Problem

?

Same problem here . I await any answer you may get because I have never pursued the matter but should have.
VA3WU
Rick

On 2013-11-06 11:50 AM, "David Fox" <davefox73@...> wrote:
?

Has anyone else experienced a problem with the clock on the display losing time? After setting the time to WWV, I lose a minute about every two weeks and have to reset the clock. Rig is used as a base station and never used mobile. IC7000 is less than a year old. This there a simple fix for this problem.

Dave
W3FOX
Re: [IC-7000] IC7000 Internal Clock Problem

 

Back in the late 1950's I had a Hammarlund receiver with a clock.

-Tom, W3TLN

On Wed, Nov 6, 2013 at 2:00 PM, Alex Netherton <anetherton@...> wrote:

From 1979, the time of my licensing, to May of this year, I never had a rig with a clock. Most had tubes. Does the rig work? Do you make contacts? Get good reports? Very sorry, but I fail to see the problem.

(Laughing a little bit... ;_) )


73 de KC4BO



Alex Netherton
8321 - 8340 of 43008