[Premium-Rx] Ten-Tec RX-340 - Amateur Use

[Odd-Jorgen Sagdahl]

Very interesting discussion!

I am using a RX340 in a fairly RF-quiet environment, and I am not impressed.
But I believe there is room for improvement ...

Two questions:

1) Where do I find details on the RX340 roofing filter mod?

2) The HF-2050 has been mentioned as an excellent MW DX performer during
this discussion - but apparently not as good as a well aligned R-390A.
Anyone that can place the HF-2050 vs. the WJ HF-1000A (which according to my
experience comes second to a well aligned R-390A with SE-3).

73 de OJ
www.kongsfjord.no




-----Original Message-----
From: premium-rx-bounces at ml.skirrow.org
[mailto:premium-rx-bounces at ml.skirrow.org]On Behalf Of Walter (Volodya)
Salmaniw
Sent: 8. februar 2005 18:23
To: premium-rx at ml.skirrow.org
Subject: Re: [Premium-Rx] Ten-Tec RX-340 - Amateur Use


At 08:57 AM 2/8/2005, w3jn wrote:
>Therefore, roofing filters of 10, 6, 3, or even 1 KHz switchable are
>highly desireable, but not necessarily easy to accomplish at the low VHF
>region with crystals.

Tell me then, why don't all high end HF rigs have this capability?  The Ten
Tec 340 roofing filter mod looked pretty straight forward and inexpensive
(using a KIWA 4 kc filter).  Others have done this mod and are happy, but I
wasn't due to the loss of fidelity.  Guy Atkins and I had problems when we
tried added a switch to the mod.  Somewhere along the line we lost a lot of
signal strength, which was not the case if the filter was wired in
permanently.  I've been wondering about this problem for quite a while.  I
don't understand why a $4k receiver (ie the 340) wouldn't have such a
capability.  I re-iterate again that the Ten Tec is a bit of a dog on MW in
it's unaltered state.......Walt.



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