[Elecraft] K3-PR10

[Fred Smith]

Thanks to all of you who have came forward to my statement supporting the
need for the preamp for 10m. My only point was my FTDX-5000's receiver and
preamps were better than my K3's and did better on weak signal work on 10m. 

That said I was proud to have the 2 best radios on the market how can anyone
go wrong with that. Both are nice radios and each has features and are
superior in ways to the other. I wish I could combine both together a lot of
the time but.........I have pretty much settled on my K3's not because they
were the top performing in every way but they fit my operating better at
this time and I really like the small package (most of the time).

I did not own a single Elecraft item in March of this year, till I bought a
partial built K2/100 & KAT100 kit that was not working at that stage (page
41) and had been sitting for 3 years. It had quite a few options and the
ones it didn't have I added till it was fully loaded. Ended up sending it to
Don and he found the problem. That is where it all started at now have 11
Elecraft items and not finished.

73,
Fred/N0AZZ

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Jan Erik Holm
Sent: Friday, October 26, 2012 11:41 PM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] K3-PR10

Same here, I have a 6/6 Yagi stack on 10 and get more or less
the same reaction.

A built in preamp for 6 and 10m would have been super. As
soon as I get some time I will make one.

/SM2EKM
--------------------------
On 2012-10-26 18:02, Dave Hachadorian wrote:
> I have 6 elements on 10, and the K3 s-meter rests at S-0. When I
> turn the K3's preamp off, I can barely hear a change in antenna
> noise.
>
> Do you have a good choke at the Hex Beam feed point?  If not,
> maybe noise on the outside of your coax is going onto the
> antenna.
>
>
> Dave Hachadorian, K6LL
> Yuma, Arizona
>
>
>
>
>
> -----Original Message-----
> From: Dale Boresz
> Sent: Friday, October 26, 2012 3:00 AM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] K3-PR10
>
> Fred,
>
> You must have an enviably quiet QTH (or a very poor antenna) if
> you find
> that the K3 can benefit from a preamp on 10m. I work a lot of
> weak
> signal CW on 10m with a simple Hex Beam up about 45 feet. Even
> with the
> Hex Beam's low gain, I can see the noise floor drop by about 9
> dBm when
> I disconnect the antenna from the K3 with the antenna pointed to
> the
> quietest part of the sky in the early morning hours when the band
> is
> clearly not open. These measurements were taken using both the P3
> and
> the K3's built-in AFV amd dBV measurement functionality.
>
> Based upon the above measurements, the band noise is already one
> and a
> half S-Units above the receiver's noise floor, so it seems to me
> that in
> terms of improving the signal to noise ratio, a preamp would be
> of
> little value.
>
> What am I missing here? (perhaps a quieter location  ;-)   )
>
> 73, Dale
> WA8SRA
>
>
>
> On 10/26/2012 4:51 AM, Fred Smith wrote:
>> Tim
>>
>> I can address this a little comparing my FTDX-5000MP and my
>> K3's the k3's
>> receivers are not up to the level of the Yaesu 5000 on the high
>> bands. But
>> quite the other way around on the low bands in IMHO but 6/10m
>> really needs a
>> good preamp for sure.
>>
>> 73,
>> Fred/N0AZZ
>
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