Re: IC7000 Audio Hiss
Kurt, No, the problem is not primarily frequencies above 5KHz, but possibly an overal increase in all audio frequencies that pass through the selected BP filter (200-4000 Hz).? But I haven't heard
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Steve W3AHL
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#42078
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Re: IC7000 Audio Hiss
Here is another completely different direction. And the benefit ,even f it doesn¡¯t help the problem, it will be good maintenance . Snug all circuit board mounting screws for best ground possible. I
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Rick Robinson
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#42077
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Re: IC7000 Audio Hiss
There is an Icom service bulletin on this. AM-100606C-ID lists one .01uFd capacitor and an insulating sheet behind IC2602, the audio amplifier. The capacitor is on the input to the amp. It¡¯s an
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Paul Hansen
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#42076
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Re: IC7000 Audio Hiss
Possibly the hiss comes from the signal not being lined up properly with the SSB filter. If the frequency is low in relation to the filter it will pass higher frequency noise. Some radios have if
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J.D. Barron
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#42075
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Re: IC7000 Audio Hiss
Possible to reduce the hiss like this : http://radioamateur.forumsactifs.com/t2025-reduire-le-souffle-present-lors-de-l-ecoute-sur-casque-ecouteur-postes-radioamateurs-ic7000-tm733-etc (use google
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Ludovic Ludo
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#42074
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Re: IC7000 Audio Hiss
Steve, Thanks for the info. Would it be possible to purchase or construct a cut off filter, say at 6-7 KHz and simply put it at the speaker? Kurt KD6LZV
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Kurt Sweeny
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#42073
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Re: IC7000 Audio Hiss
Kurt, I did some testing with my 7K (and an Elecraft K3), measuring audio noise levels on different bands with the pre-amp OFF and ON using an analyzer.? I have a report with spectrographs, but
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Steve W3AHL
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#42072
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Re: IC7000 Audio Hiss
The VA3IUL fix would seem to only apply to FM signals, since the cap is added to the FM -6dB/octave de-emphasis circuit.? Audio for other modes (CW, SSB, AM) is fed from IC2551 pin 1 to the audio
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Steve W3AHL
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#42071
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Re: IC7000 Audio Hiss
not sure but there have been 7k's that have a higher freq hiss https://www.qsl.net/va3iul/Files/IC7000_audio_noise.pdf
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Roeland Jansen, PA3MET
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#42070
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IC7000 Audio Hiss
My 7000 seems to have developed a strong hiss in the receive mode. Originally, I thought it was is atmospheric but the noise didn¡¯t change when the coax was disconnected. some details that help
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Kurt Sweeny
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#42069
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Re: IC-7000 for sale
Tnx Danny, Looking for parts radios... GL es 73 John KR?P ------------------------------------------------------------------------ *From:* Danny K5CG [mailto:k5cg@...] *Sent:* Thursday,
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John Mardock
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#42068
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IC-7000 for sale
https://eham.net/classifieds/604682 In case you're looking for one. It's not mine, I just came across the ad.
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Danny K5CG
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#42067
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Re: IC-7000 not stable on 10 & 14 MHz into reactive load
I haven't seen this problem before, but did check my two 7K's ( circa 2006 & 2010) per your description and don't see anything similar. I suggest looking at the output of the Driver board to see if
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Steve W3AHL
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#42066
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IC-7000 not stable on 10 & 14 MHz into reactive load
Hello, I am new to this group. I did try to send this before and I didn't see it pop up in the list so apologies if it comes up twice. I have been looking at a crook IC-7000 for a friend of mine which
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Simon WW
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#42065
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IC-7000 not unconditionally stable on 10 & 14 MHz
Hello, I am trying to fix a friend's 7000 that is iffy on TX on 10 & 14 MHz. I immediately think that there maybe an issue with the LPF relays / components on these bands as I see that the 10 and 14
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Simon WW
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#42064
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Re: Looking for a Replacement
As much as I love my IC-7000, the form factor question is easy.? The IC-7000 has a bunch of menus (3 groups of 3) and the screen is fairly small (for old eyes).? I also have three IC-7100 units.?
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Scott Honaker
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#42063
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Re: Looking for a Replacement
I was afraid that might be an issue. Never have understood why Icom went to that form factor. Could have at least put a 1/4©\20 tripod mount on it. 73 Joe KR0UT
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Joe Krout
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#42062
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Re: Looking for a Replacement
The remote head of the IC7000 is key. While a 7100 would be nice, it would take up real estate at the nav station desk.
By
Chip Stratton
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#42061
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Re: CW keyer not working
Yes sometimes it is - and I believe I found something now; When pulling out the plug for my cw-key from the jack at the transceiver back, the keyer then started to work as expected. Looking in the
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Daniel Uppstr?m
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#42060
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Re: CW keyer not working
Well, sometimes it's the simple things we overlook. Just thought I'd throw that out there. Very odd. My 7000 CW memories do not make a button press confirmation beep. Just sends the stored message.
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Steve Murphy
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#42059
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