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From: "Wayne Burdick"
Sent: Saturday, October 09, 2010 10:54 AM
To: "Bob Naumann"
Cc:
Subject: Re: [Elecraft] FM Filter for AM?
> Bob Naumann wrote:
>
>> Wayne,
>>
>> Am I correct in my
Hi
Does this mean that I should not worry about the AM filter in the certain
knowledge that I will, sooner or later, be able to transmit AM using the FM
filter?
If so let me chance my arm by asking how far away this change is (Hi).
73
Bill
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http://elecraft.365
net] On Behalf Of Wayne Burdick
Sent: Saturday, October 09, 2010 9:54 AM
To: Bob Naumann
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] FM Filter for AM?
Bob Naumann wrote:
> Wayne,
>
> Am I correct in my understanding that the reason the 2.1 is not
> currently
> allowed is
Bob Naumann wrote:
> Wayne,
>
> Am I correct in my understanding that the reason the 2.1 is not
> currently
> allowed is simply a firmware issue?
Yes. As usual we have a long list of customer requests that we're
working on. This is one of them (along with allowing the FM filter to
be used f
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Wayne Burdick
Sent: Friday, October 08, 2010 11:56 AM
To: Bob Naumann
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] FM Filter for AM?
Bob,
I could change all of the transmit filter bandwidth restrictions in
firmware, and this is on my
Thanks for clarifying the maximum achievable
transmitted bandwidth issue, Joe. I was aware
of this, but it had retreated to the nether regions
of my old poop's brain. (;-)
73! Ken Kopp - K0PP
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> Similarly, I assume a 6 kHz filter for TX in AM and ESSB modes.
That's a problematic assumption. If one has 2.7 or 2.8 plus a
narrow SSB filter (1.5/1.8) a normal CW/RTTY filter and a narrow
CW filter there is simply no way to support both FM (4.5 KHz DSB
AM RX) and normal AM filters. Since
> The present filter imitations serve to protect some of us
> from both unintended and intentional excessive bandwidth.
AM/ESSB/SSB bandwidth is determined by the DSP modulation
not the roofing filter bandwidth. This can easily be seen
in the use of the 6 KHz filter for ESSB where the occupied
If this change is made, we should be prepared for
complaints about Elecraft transmitters being "wide",
"splattering", etc. The present filter imitations serve
to protect some of us from both unintended and intentional
excessive bandwidth.
Elecraft's excellent reputation for "clean" transmitter
Yes please do!!
Jim
On 2010-10-08 18:56, Wayne Burdick wrote:
> Bob,
>
> I could change all of the transmit filter bandwidth restrictions in
> firmware, and this is on my list. But it would be a complex change,
> and I have to weigh it against many competing firmware change
> requests. I
Wayne,
Would you mind answering the question of transmit purity. Would the change
from 2.8 to 2.1 make our transmissions any "cleaner"?? If not, it would not
be worth all the work you would need to do. Thanks to listening to our
"requests". That is what makes Elecraft so good, other manufact
Bob,
I could change all of the transmit filter bandwidth restrictions in
firmware, and this is on my list. But it would be a complex change,
and I have to weigh it against many competing firmware change
requests. I assume the presence of a 2.7 or 2.8 kHz filter in all of
the frequency-sett
Yes, if you tell the K3 that the FM filter is 6 KHz and
not 13 KHz.
73,
... Joe, W4TV
On 5/26/2010 1:51 PM, Ruben Navarro Huedo wrote:
> Hello friends:
> At this moment i don't own AM or FM filter.
> If i install FM filter can i use it for AM?
>
> Thank's a lot.
>
__
Ruben,
Receive yes - transmit NO.
I have mine set that way - I have no desire to transmit AM.
73,
Don W3FPR
Ruben Navarro Huedo wrote:
> Hello friends:
> At this moment i don't own AM or FM filter.
> If i install FM filter can i use it for AM?
>
> Thank's a lot.
>
>
__
Hello friends:
At this moment i don't own AM or FM filter.
If i install FM filter can i use it for AM?
Thank's a lot.
--
Rubén Navarro Huedo - EA5BZ
http://www.palotes.com
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