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Message-ID: <44sdwkE+3bWGFwHp@g3xaq.demon.co.uk>
Date: Sun, 27 May 2007 18:21:02 +0100
To: rsgb_lf_group@blacksheep.org
From: Alan Ibbetson <alan@g3xaq.demon.co.uk>
References: <000801c7a04b$32303540$b533f7c2@o>
 <OqIw0FCvpYWGFwxP@g3xaq.demon.co.uk> <003201c7a07b$39685970$2fc8e150@o>
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Subject: Re: LF: Re; 502.4kcs 10am, XIZ/XAQ/PDN/KEV...
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Status: O

Ah, but nobody said it was supposed to be easy :-)

Chris is always 300Hz HF of me. I think he has a DC transceiver, 
possibly without TX offset.

Dunno whether Ray is rock bound or not. I suspect he is. I couldn't hear 
him this morning at all but Chris/XIZ copied him OK. I'm hoping moving 
the loading coil towards the tower and reducing its size will reduce 
losses, stabilise the resonat frequency, and perhaps improve receive a 
tad.

I'll try to hear you tomorrow at 6am, but if it keeps raining there is 
little chance because my aerial shifts resonance down to 495KHz in the 
rain!

I'm thinking of building a transceiver for 500K so I can net on other 
stations and to free up my FT1000MP Mk5 for HF again. Rapid has xtals 
and ceramic resonators that appear suitable. For example, xtals on 4.194 
MHz and resonators on 3.69 (504KHz nominal difference). Another possible 
pairing is 4.096 and 3.58 (516 difference). Both will need the ceramic 
resonator pushed up a few KHz with a variable cap in series with the 
nominal 20pF load, but I'm assuming that is not a big deal. The crystals 
are only 20p each so filters should be inexpensive even if I need a 
bucket load to get a set within 10% of the target IF bandwidth.

CUL,

Alan

In message <003201c7a07b$39685970$2fc8e150@o>, Gw3UEP 
<gw3uep@uklinux.net> writes
>Alan/XAQ,
>FB - that's what I thought, 502cc - Chris didn't net on to you - then Ray
>came up on 501.6 - gets complicated!
>Rog.
>----- Original Message -----
>From: Alan Ibbetson
>To: rsgb_lf_group@blacksheep.org
>Sent: Sunday, May 27, 2007 2:41 PM
>Subject: Re: LF: Re; 502.4kcs 10am, XIZ/XAQ/PDN/KEV...
>
>In message <000801c7a04b$32303540$b533f7c2@o>, Gw3UEP
><gw3uep@uklinux.net> writes
>>No sign of Alan/XAQ - not certain of his freq, 502.00 or co-ch - ckd both.
>
>Rog,
>
>I'm crystal controlled on 502.0 KHz. If the weather improved during the
>coming week I'll be doing some aerial work which may help sigs. I need
>something to help reception here because I don't seem to hear as well as
>others.

-- 

Cheers,

Alan G3XAQ
alan@g3xaq.demon.co.uk