[600MRG] [Lowfer] NDB and NAVTEX Station Details

[Merv Schweigert]

Canadian NDB must run 100 watts,  there are a number of them for sale on
ebay,  call letters and freq on the front of the transmitters, and they 
are 100W
rigs.

73 Merv K9FD/KH6

> Frank,
>
>     1) No
>     2) ?
>
>     Navtex transmitters run over 1kW out, most (but not all) NDBs run 
> 25W. NDB's operate mostly at the lower end of the LF band where 
> antennas are less efficient than at 518kHz, and NAVTEX stations tend 
> to have better (bigger) antennas anyway.
>
>  Some useful references:
> http://www.nautelnav.com/solutions/navtex/vector-series-1500w-3000w-navtex-transmitters/ 
>
>
> http://dxinfocentre.com/navtex.htm
>
> http://www.classaxe.com/dx/ndb/rna/
>
> 73 Warren
>
>
>
>
>
> On 4/8/2015 2:28 PM, Frank Lotito wrote:
>>
>>
>>
>> Two questions:
>> (1) Is there a US Government web site that associates a particular 
>> NDB or NAVTEX station with authorized maximum RF power (be it ERP or 
>> RF transmitter output) and that station's basic antenna details? Is 
>> there a Canadian web site with similar details for Canadian NDB and 
>> NAVTEX stations?
>> (2) For those NAVTEX stations having both 490 and 518 KHz 
>> transmissions, do those stations use the same transmitter and antenna 
>> for both bands (with appropriate band switching circuits), or do they 
>> use dedicated systems for each band?
>>   With invaluable guidance from K3SIW,  I have become aware of NAVTEX 
>> transmissions and the YaND SeaTTY software.  It amazed me how much 
>> stronger the NAVTEX transmissions seem to be in comparison to NDBs 
>> located at approximately the same distance away from me.
>> 73 Frank K3DZ / WH2XHA
>>
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