[chirp_users] TSQL / CTCSS

Nigel Johnson nw.johnson at ieee.org
Sat Mar 31 18:52:19 PDT 2018


It depends on the age of the person you are talking to.  When I first
got into 2m FM 48 years ago, Wide was 15kHz deviation and barrow was 5kHz!

When you get down below 3kHz you are losing the FM effect.

There is no way we should be using the new narrow - our bands are barely
occupied now, therefore no need for squeezing more in. Most of the
repeaters I know if in my city have filters for 16F3 acceptance.
(Carson's rule: 5 kHz deviation plus 3 kHz audio times 2)

When you get people using the new barrow on a repeater with 16F3
acceptance, there is a marked difference in audio level and susceptance
to noise. It is difficult to listen to a multi-way QSO without riding
the volume control up and down, and some of the people I hear on the
repeater are so low that I can barely hear them when I have it turned
all teh way up wit mobile noise.

73 de Nigel ve3id




On 31/03/18 21:38, Jardy Dawson via chirp_users wrote:
> Public safety/business is narrow.  GMRS/FRS/Marine will not change, as
> those radios are not separately programmable.  Ham will stay wide for now.
>
> Jardy Dawson
> WA7JRD Ham Radio
>
> Message sent by... Oh who the heck really cares?
>
> On Mar 31, 2018, at 17:41, Nigel A. Gunn G8IFF/W8IFF <nigel at ngunn.net
> <mailto:nigel at ngunn.net>> wrote:
>
> It's true of most repeaters in the the American continent, however,
> the rest of the world has been narrow band for many years.
>
> Officially, the US is also narrow band. Americans are just reluctant
> to change.
>
> Same is true with metric measurements.
>
> Use wide on a narrow system and your audio on speech peaks might be
> distorted. Use narrow on a wide system and you will get good audio
> quality albeit at a slightly lower level.
>
>
>> On 31 March 2018 at 18:48 John Wuest <jhwuest at gmail.com
>> <mailto:jhwuest at gmail.com>> wrote:
>>
>>
>>
>> ALSO - Someone commented that the transmit mode needs to be changed
>> to Wide Band. This is CORRECT information for ALL ham repeaters
>> unless their specific information states otherwise. The repeater
>> (145.23 in Huntsville) is a wide-band machine.
>>
> Nigel A. Gunn, 1865 El Camino Drive, Xenia, OH 45385-1115, USA. tel +1
> 937 825 5032
> Amateur Radio G8IFF W8IFF (was KC8NHF 9H3GN), e-mail nigel at ngunn.net
> <mailto:nigel at ngunn.net> www http://www.ngunn.net
> Member of ARRL, QRPARCI #11644, SOC #548, Flying Pigs QRP Club
> International #385,
> Dayton ARA #2128, AMSAT-NA LM-1691, GCARES, EAA382.
>
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-- 
Nigel Johnson
MSc., MIEEE
VE3ID/G4AJQ/VA3MCU

Amateur Radio, the origin of the open-source concept!



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