>Isn't the mode most NDB's use called A3A (tone modulation with
>continuous carrier).
No. :-)
>A2A indicates that the carrier is keyed together with the tone
>modulation so there is no continuous carrier for easy
>direction finding.
No. :-)
See
http://en.wikipedia.org/wiki/Types_of_radio_emissions#Type_of_modulation
for further detailed information.
73
Clemens
DL4RAJ
>-----Original Message-----
>From: [email protected]
>[mailto:[email protected]] On Behalf Of [email protected]
>Sent: Thursday, May 29, 2014 6:33 PM
>To: [email protected]
>Subject: Re: LF: 472 tonight
>
>Hi!
>
>Isn't the mode most NDB's use called A3A (tone modulation with
>continuous carrier).
>
>A3J again is "voice AM", continuous carrier modulated by speech or
>similar non-digital information such as music.
>
>A2A indicates that the carrier is keyed together with the tone
>modulation so there is no continuous carrier for easy
>direction finding.
>
>
>
>Correct me if I'm wrong, I'm curious since have tried to figure out
>how the mode designations really work.
>
>
>
>BR
>
>Paul-Henrik, OH1LSQ
>
>
>Quoting Clemens Paul <[email protected]>:
>
>>> A2A (or tone modulated AM)
>>
>> Just what most NDBs are using.
>>
>> 73
>> Clemens
>> DL4RAJ
>>
>>> -----Original Message-----
>>> From: [email protected]
>>> [mailto:[email protected]] On Behalf Of Rik Strobbe
>>> Sent: Thursday, May 29, 2014 3:18 PM
>>> To: [email protected]
>>> Subject: RE: LF: 472 tonight
>>>
>>> Hi Stefan,
>>>
>>> A2A (or tone modulated AM).
>>>
>>> 73, Rik ON7YD - OR7T
>>>
>>> ________________________________________
>>> Van: [email protected]
>>> [[email protected]] namens DK7FC
>>> [[email protected]]
>>> Verzonden: donderdag 29 mei 2014 13:08
>>> Aan: [email protected]
>>> Onderwerp: Re: LF: 472 tonight
>>>
>>> MCW ???
>>> What is that?
>>> 73
>>>
>>> Am 29.05.2014 12:07, schrieb John Rabson:
>>>> If you are going in for nostalgia, should you perhaps using
>>> MCW in that band?
>>>>
>>>> 73
>>>> John F5VLF
>>>>
>>>> On 29 May 2014, at 12:00, C. Groeger<[email protected]> wrote:
>>>>
>>>>
>>>>> Hi Pete,
>>>>> Thanks for fine report!
>>>>> Here H bridge directly on mains and lw Ant 300 m long.
>>>>>
>>>>> Have some big GU81 tubes here and maybe you will hear them
>>> soon on MF :-)
>>>>>
>>>>> QRS is no problem, can use straight key if you want to join, Pete!
>>>>>
>>>>> 73, df5qg
>>>>>
>>>>> Christian Groeger
>>>>>
>>>>> M0FMT<[email protected]> schrieb:
>>>>>
>>>>>
>>>>>> Hi Stefan es Christian (DK7FC es DF5QG)
>>>>>>
>>>>>> Thanks for a good evening lighting up 472. You were 599C
>>> Christian 599 at times never lost you once 10:15 to 11:10 PM
>>> UK time. CW too fast for me though not to mention the
>Deutsch... hee.
>>>>>>
>>>>>> RX here ts690s new antenna up 14m x 80m long sloper un-tuned.
>>>>>>
>>>>>> Interesting signal from you. What was the sender?
>>>>>>
>>>>>> 73 es GL Pete M0FMT
>>>>>>
>>>>>>
>>>>>>
>>>>
>>>>
>
>
>
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