[1000mp] MK 5 filter recommendations request

Mon, 20 Oct 2003 21:39:10 -0700

For a while I had a 500 Hz but no 250.  When I got the 250 (2nd IF) the 
band seemed to have twice as much space as before and it was much easier 
to find a hole for running in busy contests.  Planning on adding a 3rd 
IF 250 Hz but not sure if it will make much difference (other than 
improving the stop band performance).

73 de Jim Smith    VE7FO

Al Toothaker wrote:

>I am also ready for an HF transceiver upgrade from a dying TS940 and the MK
>5 is one of two choices I am considering.  Anyone care to elaborate on the
>filter subject or why you may or may not like the Collins for CW?
>
>I operate a lot of CW and have been using the Kenwood crystal filters at
>500Hz for years and have not really become familiar with other filter
>options.  With 500Hz now, I find that there are still times when there are
>other stations too close for comfort.  Like when a DX station is working
>split but not wide split and some callers are too close to the DX station's
>frequency for my comfort.  Not sure if a 250Hz is needed or if the other
>electronic filtering is adequate.  I guess I could try first and buy the
>Inrad later...
>
>Also, there is a feature called VBT, variable bandwidth tuning, on the
>Kenwood that does narrow the BW but at the cost of attenuating the desired
>signal.  This is bad when I am trying to work a weaker station.  I wish to
>avoid a filter and setting combination on the Mk 5 that does something
>similar so prefer to get the right filters installed.
>
>If this is not enough, any comments about what to put in the sub receiver?
>I think I would use if for spotting while working DX and is not as critical,
>performance wise.
>
>So, I am looking for a recommendation as to which filters to install in both
>IF's.  The Yaesu info does not say which to put in first:  2nd IF or 3rd IF
>or if both together are required.
>
>Thanks a lot for any comments.
>
>Al, N6TA
>
>
>
>-----Original Message-----
>From: [email protected]
>[mailto:[email protected]]On Behalf Of Barry N1EU
>Sent: Monday, October 20, 2003 9:35 AM
>To: [email protected]
>Subject: [1000mp] going to purchase mark v
>
>
>PA1HR commented "Another advantage of the 2800 Hz filter in the main
>receiver is that this filter is used by the transmitter too! It really gives
>you a noticable better sound for ragchewing etc. This is something to
>remember."
>
>If you use EDSP on ssb-t, the crystal filter is bypassed in generating the
>xmit signal.  For ragchewing on an uncrowded band, I use 100-3100hz.
>
>I do like Inrad filters, with 5 Inrads installed in my MP.  I also like the
>Collins 500hz mechanical filter for cw reception.
>
>73,
>Barry N1EU
>
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