Don,
That's to be expected as most radios begin producing RF as soon as PTT
is engaged in FSK mode - or with minimal internal delay. While it may
not be an issue when operating with no amplifier or using an amplifier
with fast relays, many of the new transceivers can be producing power
before the relays on older, slower amplifiers (TL-922, L4B/L7, SB-220,
etc.) have had time to fully switch.
This is one benefit of an interface like the microHAM microKEYER II or
DigiKeyer II as they can activate the amplifier PTT immediately and
delay the transceiver PTT a few milliseconds to permit the amplifier
T/R relays to settle before getting hit by power.
73,
... Joe, W4TV
On 1/21/2012 5:08 PM, Don Hill AA5AU wrote:
> Ron, N6EE, has done some extensive testing and found that the PTT to CW delay
> has no effect when operating FSK.
>
> 73, Don AA5AU
>
> -----Original Message-----
> From: writelog-bounces@contesting.com
> [mailto:writelog-bounces@contesting.com] On Behalf Of Don Hill AA5AU
> Sent: Friday, January 20, 2012 9:51 PM
> To: '[WriteLog]'
> Subject: [WriteLog] PTT to CW delay apply to FSK?
>
> I'm wonder if the PTT to CW delay also applies to FSK? Does anyone know
> this? It would seem that it would since perhaps both may
> be keyed from a serial port when using PC generates. Seems like it's the
> same thing only one uses DTR (CW) and the other TxD (FSK).
>
> Thanks...
>
> 73, Don AA5AU
> http://www.aa5au.com
> http://www.rttycontesting.com
>
>
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