> I think that you should choose on the filter characteristics,
> not on the price. The price difference between two 2.8s and
> two 2.7s (matched or unmatched) is peanuts compared to the
> K3-rigprice.
Think again about the difference between two 2.8 KHz filters
vs. matched 2.7 KHz filters. The upgrade price on the 2.8
KHz filters are $109.95 EACH. The cost to match the 2.7 KHz
filters is $30.95. The $179.95 difference almost pays for
the 500/200 Hz pair if one uses 5-pole filters.
Yes, it's small difference in comparison to the overall cost
of the transceiver but by using 5-pole filters instead of the
8-pole filters and buying as a kit, one could add the 100W
amplifier or possibly KRX3 for the price of the factory built
version with 8-pole filters.
73,
... Joe, W4TV
> -----Original Message-----
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Arie
> Kleingeld PA3A
> Sent: Tuesday, December 29, 2009 5:04 AM
> To: 'DM4iM'; elecraft@mailman.qth.net
> Subject: Re: [Elecraft] Filters for K3
>
>
> Martin,
>
> About the 2.7 filters and matching.
>
> I have two of those and they do not match. I set the offset
> between the two and they are now both 50 Hz off or so :-) .
> No need to worry about this. In SSB you cannot hear any
> difference. (It will be a problem with the low bandwidths so
> if you plan 200Hz 5-poles, then they MUST match. But we are
> talking about the 2.7s now)
>
> I think that you should choose on the filter characteristics,
> not on the price. The price difference between two 2.8s and
> two 2.7s (matched or
> unmatched) is peanuts compared to the K3-rigprice.
>
> My choice were the 2.7s because they are actually wider than
> the 2.8s so I can well listen AM broadcast stations and wide
> SSB with it, without sacrificing much roofing-effect.
>
> In the end, it is your choice.
>
> 73
> Arie PA3A
>
>
>
> -------------------------------------
>
> <Snip>
>
> The expense on 2 matched 5 pole or 2 8-pole filters is about
> the same, so the criteria here is performance.
>
> May i call for a run-off?
> <snip>
>
>
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