I have an Omni VI+, and like it a bunch. But...If you are in to QRP, you
GOTTA get
an Argo V!!
I have one, and it is amazing! And just as much fun!
....Dave
----- Original Message -----
From: "Darwin, Keith" <Keith.Darwin@goodrich.com>
To: <tentec@contesting.com>
Sent: Thursday, November 17, 2005 9:45 AM
Subject: [TenTec] Thoughts about Omni V filters
> Hey folks,
>
> I'm new to the list, but not new to TenTec. Well actually, I may have
> been on the list 5 or 6 years ago but I don't recall.
>
> I run mainly (not exclusively) CW and enjoy QRP. I've been a ham off
> and on for 30 years and am just returning after a 5 year QRT period. It
> seems in my 30 years I've ALWAYS been QRT during sunspot cycle peaks and
> then active during valleys. Here we go again.
>
> I am about to receive a new-used Omni V and am wondering about filters.
> A couple of questions:
>
> 1. 9 MHz vs 6.3 MHz filters: IIRC, the first IF is 9 MHz so the 9 MHz
> filter will perform more like a roofing filter than the 6.3 MHz filter
> will. So I assume the 9 MHz filter will produce greater benefit to
> dynamic range than the 6.3 will. True? If I had only one narrow filter
> is it better to have it in the 9 or 6.3 MHz position?
>
> 2. Which filters are the ones to pick for CW use? I assume 500 Hz at 9
> MHz and both 500 and 250 Hz in the 6.3 MHz position. How about 1.8 KHz
> at 9 MHz and 500 & 250 at 6.3?
>
> 4. TenTec's 250 Hz filters are 6 pole. Inrad's are 8 I believe. Why
> did TenTec not use 8 poles? I assume to reduce ringing & overall
> attenuation.
>
> 5. Are the TenTec filters OK or should I really go Inrad? I recall
> with my prior TenTecs (Omni D & Corsair II) having more leakage around
> the filter than I wanted. I assume an Inrad filter would have less but
> that's an assumption.
>
> I'm finding there is a real problem with TenTec rigs. I can't stop at
> just one. I have an Omni V on the way and I'm *still* wanting a Corsair
> II, Century 22 and of course the new Argonaut V and Orion II. *Sigh*
>
> - Keith -
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|