[Elecraft] [K3] need help with hiss on ssb receive

[hawley, charles j jr]

I don't have any on the K3 ser#4580 either. Worst for me was an FT990

Chuck, KE9UW
Lionel Trains, TCA, LCCA, LRRC
aka Jack, BMW Motorcycles BMWMOA #224

________________________________________
From: elecraft-bounces at mailman.qth.net [elecraft-bounces at mailman.qth.net] on behalf of Barry Simpson [vk2bj.au at gmail.com]
Sent: Saturday, November 24, 2012 3:02 AM
To: Scott Manthe
Cc: elecraft at mailman.qth.net
Subject: Re: [Elecraft] [K3] need help with hiss on ssb receive

I have never heard any hiss whatsoever with my K3 (s/n 1397) either on speaker or headphones, CW or SSB and I am particularly sensitive to such things. My TS590 does have some very low level hiss which I can live with Ok and I had a TS480 which had quite pronounced hiss. The worst I have heard in recent years is the FT2000 which is one of the reasons I have never owned one.

73

Barry. VK2BJ

Sent from my iPad

On 24/11/2012, at 11:15, Scott Manthe <scott.manthe at gmail.com> wrote:

> I've heard of this problem, but have never actually heard the problem on my K3, which has a serial number in the 3000 range. I'm sure you'll get numerous replies offering suggestions.
>
> I'm curious, when you say you "hang out" on USB, does this mean you never operate below 10 mHz? Or do you operate on USB even on 40, 80 and 160 meters? Personally, I don't notice much difference in the frequency response on USB and LSB, but that might be because I only operate USB on the bands above 10 mHz.
>
> 73,
> Scott, N9AA
>
> On 11/23/12 11:00 PM, Mike Rodgers wrote:
>> I've been putting up with this hiss on receive for two years. Others have complained as well. It sounds like a rushing wind. Kinda like old cassette tape hiss. It's the dirty little secret no one wants to talk about and the first thing that comes up on other forums when you mention k3. The most common being "tiring to listen to.
>>
>> I think I've got it the best it can be but I'm looking for tips to make it better.
>> It keeps me from listening wide. Any hi cut above 2400 starts to irritate me so that limits me to a width of 2.1!
>>
>> Others complain on LSB but to me it seems more noticeable on USB where I hang out.
>>
>> It's a two year old k3 #5047 running latest firmware (not the beta).
>> It's not Agc related as its the same with agc off.
>>
>> I feel I have a very aggressive negative eq as follows.
>>
>> 0.  0.  0.  -3.  -3.  -12.  -12/16.  -16
>>
>> I love the rig except for this. I'm not planning to sell it but I would like to make it better if possible.
>> Right now I'm stuck at a width of 2.1 because of this. Am I doomed to just get used to it? I can filter it out with a kenwood speaker with filters but that's really just doing the same as reducing hi cut or bandwidth.
>>
>> Any ideas welcomed.
>>
>> Thanks and 73
>> Mike R
>>
>>
>>
>> Play me some fiddle, but no stinkin' violin!
>>
>> Amateur/Ham Radio KE5GBC
>> HF & Echolink mobile
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