Hello all,
Today I received the 1.8 Kc 8 pole filter and installed it tonight.
I did the configuration with the software tool used for firmware updates as
well (also performed an update as well).
All went OK, but I do have a feeling something is wrong or my ears/brains
work a little
Of Evert Bakker (PA2KW)
Sent: Wednesday, May 21, 2008 23:58
To: 'Elecraft Reflector'
Subject: [Elecraft] Xtal Filters
Hello all,
Today I received the 1.8 Kc 8 pole filter and installed it tonight.
I did the configuration with the software tool used for firmware updates as
well (also performed
During a process of decreasing bandwidth while listening to an SSB signal, I
would appreciate if a shift of the centre-freq of the DSP is not required
Any suggestion?
Use HI CUT/LO CUT instead of SHIFT/WIDTH in SSB. As you adjust for best
recovery, the 1.8 kHz filter will cut in when the
Evert,
When using SSB, it is usually easier and better to use the HI CUT/LO CUT
rather than width and shift. Just reducing the HI CUT will usually
result in a narrowed bandwidth but maintains intelligibility.
The BFO/Filter relationship should be preserved with the low end between
250 and
Hi,
I am assuming that you are using SSB. For SSB, use the Hi Cut / Lo cut mode
instead and adjust the Hi Cut for lower bandwidth. The Shift / Width mode is
not suitable for SSB since it wants to keep the center frequency constant,
while what you want in almost all cases is simply decreasing the
radio (I had) that beats the beast (TR7A/R7A).
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of ab2tc
Sent: Thursday, May 22, 2008 00:35
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Xtal Filters
Hi,
I am assuming that you are using SSB. For SSB
Hi Knut and all,
I totally agree with you. CW operation of the filters is fine. With
SSB it would be way easier if the filter centre frequency would be
reduced by a small amount as the width is reduced. In the heat of
battle those small filter knobs are not easy to adjust without nudging
Hi again,
I think your particular problem has a fairly simple solution. Press (hold)
the I/II button (on the HI/Width button) and set up the alternate 1.8kHz the
way you want it. Now you will be able to switch between a wide and narrow
SSB setting without twiddling any knobs. This is the way I
Evert -
I haven't noticed that with mine. It just seems like a nice, linear
reduction in bandwidth.
I thought the sound of the 1.8 bandwidth was much nicer with the
actual 1.8 filter + 1.8 DSP than the 2.8 filter + 1.8 DSP.
73,
Steve NN4X
On Wed, May 21, 2008 at 5:57 PM, Evert Bakker
Question on the xtal filters used on rx.
I have the SSB board installed
when in CW mode. what set of filters is the receiver
using ?
the ones on the main board or the SSB board ?
this is for the K2 radio
Perry WA8THK
PERRY WA8THK FP#582
GAINES, MICHIGAN -USA
Perry,
The fixed bandwidth filter on the KSB2 option is identified as OP1, OP2,
OP3, OP4 or OP5 - all other filters are identified by a numerical value
representing the filter width and use the variable bandpass filter on the RF
Board. Note that the numerical value may not be the actual
--- Don Wilhelm [EMAIL PROTECTED] wrote:
Perry,
The fixed bandwidth filter on the KSB2 option is
identified as OP1, OP2,
OP3, OP4 or OP5 - all other filters are identified
by a numerical value
representing the filter width and use the variable
bandpass filter on the RF
Board.
Perry,
One clarification - the BFO used for transmit is always the one associated
with FL1 for whatever mode you are set for - and on SSB the OPx filter is
in-line for transmit (to do its sideband 'stripping task'), so for proper
SSB operation, you must have the SSB FL1 set to OPx. On CW, the
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