[Date Prev][Date Next][Thread Prev][Thread Next] - [Date Index][Thread Index][Author Index]

Frequency offset in FT-847



Hello everyone,

I have a second hand FT-847 and have observed that the TX and TX
frequencies have an offset.
For example, to reach a local repeater I have to tune up 11,4 KHz in the
UHF band and 3,8 KHz in the VHF band (centering the DISC indicator). I
have done this proof using local stations, repeaters, satellites (with a
known doppler, ...) 

I've noted that this offset is proportional to the frequency I use:

435 MHz -- 11,4 Khz  (more or lesss)
145 MHz -- 3,8 KHz (more or less)

There is a relation of 3.

Could this be a problem of the PLL Module?
Could this offset be corrected in some manner?
Is there any capacitor, coil or potenciometer I could tune?

Thanks.

Raul
X-Mozilla-Status: 0009May 21 14:17:49 2000
X-Mozilla-Status: 0801
X-Mozilla-Status2: 00000000
FCC: /C|/Archivos de programa/Netscape/Users/raul_gomez/mail/Sent
Message-ID: <3927D3EC.281D95BD@teleline.es>
Date: Sun, 21 May 2000 14:17:48 +0200
From: Raul Gomez Fernandez <raul.gomez@teleline.es>
X-Mozilla-Draft-Info: internal/draft; vcard=0; receipt=0; uuencode=0;
html=0; linewidth=0
X-Mailer: Mozilla 4.61 [en] (Win98; I)
X-Accept-Language: en
MIME-Version: 1.0
To: Francisco Costa <nop06152@mail.telepac.pt>
Subject: Boom de PVC
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: 8bit

Hola Francisco,

Ayer compre el tuvo de PVC para el boom de las antenas de satélites.
Tiene 2 metros de largo, 40mm de diámetro y 3,2mm de grosor. Te quería
preguntar algo, tu lo has pintado? dicen que con el tiempo el sol
deteriora el PVC, es asi?

Gracias.

Raul
EA4EKH
----
Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org



AMSAT Top AMSAT Home