[1000mp] MK 5 filter recommendations request

Mon, 20 Oct 2003 13:32:18 -0700

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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