[RTTY] USB to Serial Convertors

[Jim W7RY]

The edgeport does not require you to use EXTFSK. It works just as a serial 
port would.

73
Jim W7RY

----- Original Message ----- 
From: "Richard Ferch" <ve3iay at storm.ca>
To: <rtty at contesting.com>
Sent: Saturday, August 01, 2009 3:42 AM
Subject: Re: [RTTY] USB to Serial Convertors


> Andrei,
>
> Does this work for FSK from MMTTY *without* using EXTFSK?
>
> As far as I am aware, basically any USB-to-serial adapter will work with
> EXTFSK - there's nothing remarkable about that. It's using them directly
> without the help of EXTFSK that is the problem.
>
> The reason I ask is that according to the specifications at the link you
> gave, the minimum speed of this one is 300 baud.
>
> The same question applies to the Digi Edgeport multi-port devices. I
> don't see a minimum speed mentioned in the specifications at the Digi
> web site, but the maximum speed mentioned is high enough to raise
> concerns. The reason most USB adapters don't work at low speeds, as I
> understand it, is that there is a limit to the dynamic range of speeds
> they will support, and in order to support very high speeds (230 kbps
> and up) they give up support for very low speeds. In addition, they may
> also give up support for 5-bit word lengths, since very high-speed
> applications probably use only 8-bit words.
>
> 73,
> Rich VE3KI
>
>
> Andrei Stchislenok wrote:
>
>> I have been using this one for last four years - no problem...
>>
>> Dual Port USB to Serial RS-232 DB-9 Adapter Cable FTDI Chip $39.98
>>
>> http://www.usbgear.com/computer_cable_details.cfm?sku=XC-232-C&cats=199&catid=626%2C106%2C199%2C465
>
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