The AR5000 series of receivers have been designed &
manufactured by our
associate company in Japan who are responsible for international
distribution, the appointment of national distributors and support:
AOR Ltd, 2-6-4 Misuji, Taito-Ku, Tokyo 111-0055, Japan
Tel: +81 3 3865 1695
Fax: +81 3 3865 1697
e-mail: [email protected]
WEB http://www.aorja.com
I wonder what specific query you have regarding the 10MHz external
reference, here are a few comments...
1) Selection of the external 10MHz / internal 12.8MHz
reference is via a
menu.
2) From our experiments, the minimum drive level is about 0dBm, about
10dB above this level (+10dBm) appears necessary to ensure
PLL LOCK on
all bands. We have driven the AR5000 successfully from our workshop
reference of 5V.
3) Only the master oscillator is controlled by this
reference, the radio
uses three oscillators in its superheterodyne circuit, so use
of a 10MHz
reference does not make the radio fully frequency / phase
coherent. AOR
used to make a custom version for coherence called the AR5000C, it is
no-longer available.
4) Typical drift using the internal 12.8MHz reference can be
viewed on
the following link: http://www.aoruk.com/5000bull.htm#frequency
I hope my comments will be of assistance.
Regards, Richard Hillier - AOR UK
b.c.c. Frederic Collin, AOR Japan
>
>
>-----Message d'origine-----
>De : [email protected]
>[mailto:[email protected]]De la part de
Tracey Gardner
>Envoyé : lundi 12 septembre 2005 10:23
>À : [email protected]
>Objet : LF: Re: AR5000A
>
>Hello Jean-Louis
>
>Just contact Richard Hillier at AOR UK. [email protected]
>He will be able to answer your question straight away.
>I've always found AOR UK to be extremely helpful.
>I've no connection with them, other than being a satisfied customer.
>
>73s Tracey
>
> ----- Original Message -----
> From: [email protected]
> To: [email protected]
> Sent: Monday, September 12, 2005 8:07 AM
> Subject: LF: AR5000A
>
> Hi all
>
> The AOR AR5000A receiver is fitted with a 10 MHz ref.
input allowing to
> lock the VFOs on an external high stability frequency source. The
> user's manual doesn't give any details on the shape
(square ? sine ?)
> and the amplitude of the 10MHz ref. signal to be used.
> Anyone there having any details ?
>
> Thanks
>
> 73 de Jean-Louis F6AGR
--
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Derbys DE4 3JX,
England
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