Filter installing question

[DK5EW]

Hi all,
I have a small understanding problem in using filters.

I installed a additional SSB filter 2.1KHz/8pol on row 3. (1. is FM and
2. is 2.7KHz).
I configured new 2.1KHz filter FL3_BW and set it with number 3 to 2.10,
FL3_Freq to 0.00, FL3_GN to 0db, FL3_ON to YES

_What I do not understand:_
On menu FL_TX_SB is now FL2 so I TX now with FL2(2.7KHz) ? Do I have to
switch there on FL3 to transmit with FL3 (2.1KHz) ?
Can I switch between filters in operating ? Is it then only in RX
between 2.1KHz and 2.7KHz filter ?
And TX filter is always that one I configured in FLTX_SB menu ?

Thanks for reading !

--
best regards
Erwin/DK5EW




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[Don Wilhelm-4]

Erwin,

You must use the 2.7kHz (or 2.8) filter to transmit SSB (or CW or data)
- the narrow filters are only for receive.

73,
Don W3FPR

On 2/15/2012 12:13 PM, DK5EW wrote:

> Hi all,
> I have a small understanding problem in using filters.
>
> I installed a additional SSB filter 2.1KHz/8pol on row 3. (1. is FM and
> 2. is 2.7KHz).
> I configured new 2.1KHz filter FL3_BW and set it with number 3 to 2.10,
> FL3_Freq to 0.00, FL3_GN to 0db, FL3_ON to YES
>
> _What I do not understand:_
> On menu FL_TX_SB is now FL2 so I TX now with FL2(2.7KHz) ? Do I have to
> switch there on FL3 to transmit with FL3 (2.1KHz) ?
> Can I switch between filters in operating ? Is it then only in RX
> between 2.1KHz and 2.7KHz filter ?
> And TX filter is always that one I configured in FLTX_SB menu ?
>
> Thanks for reading !
>

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[Dick Dievendorff]

The Tx filter for SSB, Data, and CW must be 2.7 or 2.8 kHz, so FL2 is right
for your installation for TX SSB and TX CW.
The 2.1 kHz filter is not used for transmit, just receive.
You should be able to use all your filters for receive, just enable (for
receive) all installed filters for CW, LSB, USB, and DATA.  

My K3 radio doesn't have an FM or AM filter, so I can't transmit in those
modes, but I can receive AM using my 2.8 kHz filter and tuning to one
sideband.

73 de Dick, K6KR


-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of DK5EW
Sent: Wednesday, February 15, 2012 9:14 AM
To: [hidden email]
Subject: [Elecraft] Filter installing question

Hi all,
I have a small understanding problem in using filters.

I installed a additional SSB filter 2.1KHz/8pol on row 3. (1. is FM and 2.
is 2.7KHz).
I configured new 2.1KHz filter FL3_BW and set it with number 3 to 2.10,
FL3_Freq to 0.00, FL3_GN to 0db, FL3_ON to YES

_What I do not understand:_
On menu FL_TX_SB is now FL2 so I TX now with FL2(2.7KHz) ? Do I have to
switch there on FL3 to transmit with FL3 (2.1KHz) ?
Can I switch between filters in operating ? Is it then only in RX between
2.1KHz and 2.7KHz filter ?
And TX filter is always that one I configured in FLTX_SB menu ?

Erwin/DK5EW


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