Re: icom ic7000 donor availability
Very interested in your rig let me know
By
ZS2PA Andrew Prideaux
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#42318
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Re: IC-7K after reverse connection to 12V
How do you think I learned that lesson? It was a Kenwood TS-480 with the polarity reversed. But in my case I made the mistake of flipping the DC cable polarity at the fuses themselves. Because there
By
Danny K5CG
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#42317
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Re: IC-7K after reverse connection to 12V
Thanks Mark, you are right as well.? PN junctions do not forgive mistakes...
73 de Raoul CE3RY
By
Raoul Meunier
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#42316
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Re: IC-7K after reverse connection to 12V
Thanks Danny, you are right. I should have had a fuse in the line... but it was an extension cable and I was in a hurry... etc etc. Quite a chain of mistakes!
One never stops learning... and one never
By
Raoul Meunier
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#42315
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icom ic7000 donor availability
Hi ,
I am having an icom ic7000 ,relay click error radio ,with an extra CPU, let
me know any members need as parts ,I can give as a whole radio with DC
cable and microphone,or as individual spare
By
Prabhu
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#42314
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Re: IC7000 Clock Accuracy
A thought:
There's probably a backup battery (small lithium "coin cell", most likely)
in the IC-7000. If that was weak, it would affect the timekeeping _when
the radio was powered off_. I don't
By
Charles VA7CPC Cohen <va7cpc@...>
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#42313
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Re: IC-7K after reverse connection to 12V
I've seen radios with a reverse diode used as a crowbar on the DC input (Kenwood TS-480 for example) that will protect the radio in the event of revers polarity and it will get real hot if the fuse
By
Danny K5CG
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#42312
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Re: IC-7K after reverse connection to 12V
PN junctions blow faster than any fuse.
By
Mark Schoonover
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#42311
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Re: IC-7K after reverse connection to 12V
It's important to have a fuse in line and the fuse value must be less than the max current of the power supply to ensure it will blow on a complete short.
73
Danny, K5CG
HH 550-000-0609
SKCC
By
Danny K5CG
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#42310
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IC-7K after reverse connection to 12V
Hi Team,
A few days ago, I connected my IC-7K to the PS using an extension cable, not noticing I was reversing the polarity.
A few seconds later, I felt a smell coming from somewhere and I
By
Raoul Meunier
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#42309
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Re: IC7000 Clock Accuracy
Thanks Paul.
By
Edward Luers
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#42308
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Re: IC7000 Clock Accuracy
Regarding the clock battery in IC-7000 logic units, I tried to order some from Icom a few months back. On backorder with no ETA. I believe I ordered a couple from Mouser. Take a look at
By
Paul Hansen
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#42307
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Re: IC7000 Clock Accuracy
I'll give the rig a couple of days being on and see what happens. Thanks
for the heads up. I'll post my results.
Ed
By
Edward Luers
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#42306
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Re: IC7000 Clock Accuracy
Ed,
Paul is correct. The clock battery is probably shot. I just checked my notes and my 7000 was keeping poor time a few?years back. Sorry, my memory isn't what is used to be.?
The battery is a
By
Steve Murphy
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#42305
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Re: IC7000 Clock Accuracy
Thanks Paul.
I'll give it a check.
73,
ED KE6SU
By
Edward Luers
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#42304
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Re: IC7000 Clock Accuracy
IC-7000’s have a small clock battery inside the logic unit. It’s just a tiny bit larger than the one in the 7300 and it does not last forever. It’s very unlikely the clock chip itself has gone
By
Paul Hansen
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#42303
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Re: IC7000 Clock Accuracy
Steve,
Thanks for the reply. The radio is one of my home radios and is cycled off
every evening. I bought it in 2013. I'm not sure that's it's worth
replacing the chip.
Again thanks.
Ed KE6SU
By
Edward Luers
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#42302
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Re: IC7000 Clock Accuracy
That's terrible time keeping accuracy. My 7000 only drifts seconds per month but it lives in stable temperature environment in my shack.
The 7000 uses an Epson time keeping chip with an onboard
By
Steve Murphy
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#42301
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IC7000 Clock Accuracy
Is there any way to improve the accuracy? In a 24 hour period it loses
about a minute.
Ed KE6SU
By
Edward Luers
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#42300
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Re: No TX audio on JS8CALL
This is good to know. Thank you. I am wondering why my 6 pin
Mini-DIN is not working with this cable as it works on other radios.
Chris KQ6UP
By
Chris Maness KQ6UP
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#42299
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