|
Alan,
Thanks for all info. Ray has
502.6 & 501.6 cc.
Suggest use two xtals if mixing - use
divider with cer-res [to divide drift].
Beacon on 501.5 now - will lsn 502 shortly
on off-chance - static low here, at present.
Rog.
----- Original Message -----
Sent: Sunday, May 27, 2007 6:21 PM
Subject: Re: LF: Re; 502.4kcs 10am, XIZ/XAQ/PDN/KEV...
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
<[email protected]>
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: [email protected]
>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
><[email protected]>
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
[email protected]
|
