I am using one of the Drake TV-1000LP right now. Seems to still do ok on
6m.
John AF5CC
----- Original Message -----
From: "Mark n2qt" <n2qt@verizon.net>
To: <rfi@contesting.com>
Sent: Friday, May 11, 2012 1:39 PM
Subject: Re: [RFI] Is a low pass filter necessary?
> drake had a tv-3300-lp with a 33Mhz cutoff and a
> tv-1000lp which moved the cutoff up so that they
> rated it for 1KW up to 30Mhz and 200 watts up to 52 Mhz.
>
> I have two of the tv-1000lp and one of them has shifted it's
> response so that it's pretty well useless on 6M.
>
> Mark n2qt
>
>
> -----Original Message-----
> From: Pete Smith N4ZR
> Sent: Friday, May 11, 2012 8:57 AM
> To: rfi@contesting.com
> Subject: Re: [RFI] Is a low pass filter necessary?
>
> Back in the day, I believe Drake made two - a cheaper one that rolled
> off between 40 and 50 MHz, and one intended specifically for 6 meters,
> with a sharp roll-off above the band and below Channel 2.
>
> 73, Pete N4ZR
> The World Contest Station Database, updated daily at
> www.conteststations.com
> The Reverse Beacon Network at http://reversebeacon.net, blog at
> reversebeacon.blogspot.com,
> spots at telnet.reversebeacon.net, port 7000 and
> arcluster.reversebeacon.net, port 7000
>
>
> On 5/11/2012 8:45 AM, Andy wrote:
>>> Perhaps new low-pass filters have a higher corner frequency to
>>> accommodate the rash of HF rigs (and now the Elecraft KPA500
>>> amplifier) that include 6-meter coverage ...
>> I thought the ordinary HF low-pass filters were and still are designed
>> for up to HF only, so they don't pass 6 meters which is VHF. I
>> wouldn't expect that to change unless the filter specifically states
>> it extends to 6 meters, or 2 meters or 440 (since those two are likely
>> to appear on the current rash of modern all-band rigs).
>>
>> Andy
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>>
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