[Hammarlund] Preselector suggestion?

[Carl]

I like to run JA's on 40CW during evening grayline longpath, the din is 
amazing.
I'll call one CQ and just run them until they are well into daylight and 
fade out.

Of course everyone QSL's!

Just about all prewar radios need some preselector help at 12-14MHz and up 
and a lot of the 1945 to roughly 1954 ones. Once the 6DC6 and 6BZ6 were used 
in front ends it was only necessary from about 20MHz and up.

Even the R-390A is a bit noisy on 10M.

Carl


----- Original Message ----- 
From: "rbethman" <rbethman at comcast.net>
To: <hammarlund at mailman.qth.net>
Sent: Tuesday, December 13, 2011 5:41 PM
Subject: Re: [Hammarlund] Preselector suggestion?


> Yes, work one JA, and be prepared for a landslide!
>
> I don't normally use the preamp.  It usually stays in bypass mode.
>
> Either the SP-600J (NO X), or the R-390A do quite well.
>
> I don't have issues between any of the modes.
>
> My dipoles are oriented such that I favor the East and West directions.
> My last endeavor with Japan netted somewhere around thirty some odd
> contacts.
>
> Bob - N0DGN
>
> On 12/13/2011 5:23 PM, Glen Zook wrote:
>> I have used one of the Ameco nuvistor preamps on 40-meter CW early
>> mornings, especially during the winter months.  Using the preamp with
>> a narrow CW filter boosts the very weak 10-watt output JA stations so
>> that they can be copied.  When you work one of those stations, ten
>> times the number will start calling because you worked "one of them".
>>  There will be a "din" of stations calling and suddenly one of them
>> will peak and you get the call sign.  Then the din starts again.
>>
>> Using phased verticals on 40-meters, from a northern suburb of Dallas,
>> Texas, during the winter, I have been able to work JA stations until
>> well after noon local time!  The latest time QSL that I have for SSB
>> is about 11:45 AM local time and the latest time QSL for CW is well
>> after 1:00 PM local!
>>
>> Now most of the time, a preamp is just not needed on HF, at least with
>> some of the better receivers.  However, a preamp definitely helps on
>> the higher frequency bands with a lot of older receivers.
>> Glen, K9STH
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