[1000mp] TCXO-6 - Which TXCO for Digital modes?

Wed, 5 Jun 2002 10:12:41 -0400

This is an easy choice. As rigs get older, accessories and parts dry up. As
it says at the Complaint CAP web site, check on the availability of the Txco
before buying a rig. Thus to maintain the resell value, not to mention the
compliance, you need to have the TCXO-6

To be Compliant for out of ham band operations, you will need the optional
TCXO-6 Oscillator. CAP National Technology Center:
http://www.ntc.cap.gov/comm/equipment/hf_equipment.cfm

73 from Bill - WD8ARZ
[email protected]

----- Original Message -----
From: "Christian Buenger" <[email protected]>
To: <[email protected]>
Sent: Wednesday, June 05, 2002 08:46
Subject: [1000mp] Which TXCO for Digital modes?

> Hi,
>
> I am planning to buy a TXCO because I noticed a big drift of abt. 100 Hz @
> 14 MHz after some operation. This is no wonder because the manual states
10
> ppm stability. [My FT 100 without a TXCO offers 4 PPM which is much
> better.] During normal SSB and CW operation this is not a problem [I
barely
> noticed it] but if you are operating digital modes (Pactor II etc.) then
> this drift can be a problem. I am using the "User" mode in "packet-low"
> position with a center frequency of 1500 Hz and this drift not only
changes
> the RX frequency. It also changes the center frequency of the filter
curve.
> In all other modes the curves are stable.
>
> There exists two TXCOs: TXCO-4 with 2 ppm and TXCO-6 with 0,5 ppm. As I am
> not planning to setup a "reference" transmitter I am planning to buy the
> TXCO-4 which costs only 1/3 of the TXCO-6.
>
> What are your results? Are you operating Pactor? Which TXCO are you using?
>
> Thank in advance.
>
> 73
> Christian, DL6KAC
> --
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