[Boatanchors] FS: FT243 7160 kHz AM band Crystals

[Carl]

Ive worked plenty of EU and AF DX on 10 AM and NBFM this year and even on 6M 
AM. The big amp is apart for some mods and finalizing (pair of 250TH's with 
304TL audio) so its been the Viking II CDC or HT-9 barefoot with a HT-18 VFO 
for both. Antenna is 4el at 100'.

Cleg twins, Zeus and Interceptor B on 6M to 8el.

As always the biggest problem with AM is trying to decipher those weak 
stations with weak audio. The pair of weaks add up to no QSO.

Carl
KM1H



----- Original Message ----- 
From: "Radios R. Me" <radios_r_me at yahoo.com>
To: "Drew P." <drewrailleur807 at yahoo.com>; <boatanchors at mailman.qth.net>
Sent: Monday, July 26, 2010 7:20 AM
Subject: Re: [Boatanchors] FS: FT243 7160 kHz AM band Crystals


> That is vastly different from my experience.  I have had many many 
> contacts on
> 10m AM.
>
> Most of them on 7250 kHz - I will agree, but when the band is open, you 
> often
> hear guys on
>
> 29.020, 29.040, 29.050 MHz etc.  The band is often open when people do not
> realize it.
>
> With the summer Es season now in swing, it is not at all uncommon during 
> the
> daytime
> out to 500 or even 1000 miles.  These are sometimes brief openings, but 
> you
> never
> know when it will pop open for 30 minutes or so.
>
> There are some specialty 10m discussion groups on yahoo groups, and from 
> the
> reports
>
> on there,  and my own listening, I know that the Es propagation mode is 
> far from
> being a thing
>
> of the past.
>
>
>
> FOR FASTER RESPONSE, Please use my main e-mail
> address:   af4k at hotmail.com
>
> 73 - Brian "Bry" Carling, AF4K
>
>
>
>
>
>
> ________________________________
> From: Drew P. <drewrailleur807 at yahoo.com>
> To: boatanchors at mailman.qth.net
> Sent: Sun, July 25, 2010 5:05:39 PM
> Subject: Re: [Boatanchors] FS: FT243 7160 kHz AM band Crystals
>
>
> On his selection of 40 meter crystals for sale, "Bry" remarked:
>
> (snipped)
>
> "Some of these will make great multipliers onto 10m AM also..."
>
> In my opinion, only one of those frequencies would make a great multiplier 
> onto
> 10m AM:  7250.
>
> Back when 10 was open, I had a crystal on 14.400 which I used in my
> Hallicrafters HT-9 to get on 10 meters, 28.800 Mhz.  I could sit there all 
> day
> and call CQ and never get a response.  The radio had good power output. 
> The
> antenna was reasonably good.  I then dug out an old Knight VFO, and made 
> up a
> doubler circuit with a 6AU6 in a small aluminum box.  This plugged right 
> into
> one of the plug-in modules in the HT-9, and a piece of coax brought in the
> Knight VFO's 40 meter signal.  I made many good contacts both local and DX 
> on
> 29.000 with the VFO-doubler-HT-9 setup.  But when I'd for the heck of it 
> try
> 28.800 either with VFO or the crystal, no response whatsoever.
>
> I fiured it wasn't the MUF, as there was plenty of DX activity down lower 
> in the
> band.  It must have been mode-selective propagation; AM signals simply do 
> not
> get out on 28.800 (snicker).
>
> And now it is all completely moot, as sunspots have become a thing of the 
> past,
> or so some reports say.
>
> Drew
>
>
>
>
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