floor do not open
the gate.
Mel, K6KBE
From: Wes Stewart
To: elecraft@mailman.qth.net
Sent: Tuesday, August 28, 2018 1:15 PM
Subject: Re: [Elecraft] Filter Recommendations
I've been at this for 60 years now and the only time I've ever heard signals
"pop out of the noise"
I've been at this for 60 years now and the only time I've ever heard signals
"pop out of the noise" was when I was working 2-meter meteor scatter. Where
have I gone wrong?
Wes N7WS
On 8/27/2018 8:02 PM, Don Wilhelm wrote:
When you can just barely hear the no-signal band noise, signals will
Of Don Wilhelm
Sent: Monday, August 27, 2018 10:02 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Filter Recommendations
Many hams equate no signal band noise to receiver sensitivity. Nothing could
be further from the truth. Bob has pointed out some very good guidelines.
For those who
On 8/27/2018 10:01 AM, Bob McGraw K4TAX wrote:
Per one authority on receiver performance, the optimum receiver
performance occurs when the no signal band noise is about 10 dB above
the receiver noise floor.
Not quite -- when the noise from the antenna is 10 dB above the receiver
noise, the
Many hams equate no signal band noise to receiver sensitivity. Nothing
could be further from the truth. Bob has pointed out some very good
guidelines.
For those who do not want to play with the RF Gain to simplify things,
the attenuation and preamp settings will still do a great deal to
I agree with Peter in that many hams use too much RX RF Gain and too
little attenuation. Per one authority on receiver performance, the
optimum receiver performance occurs when the no signal band noise is
about 10 dB above the receiver noise floor. Since we can't adjust the
receiver noise
-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bill Stravinsky via
Elecraft
Sent: Monday, August 27, 2018 1:35 AM
To: Elecraft Reflector
Subject: Re: [Elecraft] Filter Recommendations
I opted for a 2.1 ssb filter hoping to be able to enjoy phone
I opted for a 2.1 ssb filter hoping to be able to enjoy phone contesting just a
little bit more but so far I haven't found the magic elixir for phone.I only
replied to the post after seeing "information garbling" from Don. That is
exactly what happens to me with whatever filter or
On 8/26/2018 6:50 AM, Don Wilhelm wrote:
The 2.8kHz filter has a flatter passband and steeper skirts than the
2.7kHz.
Yes. I use 2.8 kHz filters in all three of my main receivers, and 2.7
kHz in my Sub Receivers. The better flatness of the 2.8 kHz filter
reduces incidental AM when
-
From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net]
On Behalf Of Lee Murrah via Elecraft
Sent: Sunday, August 26, 2018 8:45 AM
To: Elecraft Mail List
Subject: [Elecraft] Filter Recommendations
I am looking to upgrade my K3S with filters and am using the DX version
In regard to filters, see http://www.elecraft.com/K3/Roofing_Filters.htm
for the explanation and justification and application of various
filters. Wayne and Eric have provided excellent real world advice in
this regard.
73
Bob, K4TAX
Lee,
The 2.8kHz filter has a flatter passband and steeper skirts than the 2.7kHz.
But remember that this is a roofing filter, the DSP provides the actual
filtering for the K3/K3S.
The purpose of the roofing filter is to keep strong adjacent signals
from overloading the Hardware AGC and the
The 2.8 has better symmetry and no frequency offset. Personally, I have no use
for a 2.1. If you are a CW or RTTY man get a 400 Hz.
Wes N7WS
On 8/26/2018 5:45 AM, Lee Murrah via Elecraft wrote:
I am looking to upgrade my K3S with filters and am using the DX version of the
radio as a
* On 2018 26 Aug 07:46 -0500, Lee Murrah via Elecraft wrote:
> I am looking to upgrade my K3S with filters and am using the DX
> version of the radio as a guide. What is the advantage of the 2.8 KHz
> filter over the stock 2.7? What does the 2.1 KHz filter do for you?
I have the 2.7 and 2.1
Although I have the standard 2.7 kHz filter in my K3S, the 2.8 is
reported to give a little bit better SSB sounding audio. From
experience with another radio, opening up the SSB BW 100 Hz gives a wee
bit better sounding audio. Emphasis on "wee" bit. As to the 2.1 kHz, I
opted for a 1.8 kHz
That is a really good question Lee and the answer can be very complicated. It
depends is probably the best answer.
An everyday experience is what I used in my determination to purchase neither
was:
When in my daily 3710 LSB group QSO there would regularly be an interfering
station on 3713
I find the 2.1 KHz filter useful for SSB contesting when the
band is crowded. At other times it also seems to reduce band
noise when it is engaged. (The other filter that will be engaged
in my radio is a 5 pole 2.7 KHz filter.)
If you set a low cutoff of 350 Hz then the 2.1 KHz filter will
I am looking to upgrade my K3S with filters and am using the DX version of the
radio as a guide. What is the advantage of the 2.8 KHz filter over the stock
2.7? What does the 2.1 KHz filter do for you?
__
Elecraft mailing list
Home:
18 matches
Mail list logo
