[AMRadio] AM IARU Region 2 Bandplan


Barrie Smith barrie at centric.net
Mon Mar 8 17:07:08 EST 2010


Bob:

What do you set the resting plate current on your BC-610?

I run 40 ma on mine, but Eimac recommends 50 ma.

73, Barrie, W7ALW
----- Original Message ----- 
From: "rbethman" <rbethman at comcast.net>
To: "Discussion of AM Radio in the Amateur Service" 
<amradio at mailman.qth.net>
Sent: Monday, March 08, 2010 2:37 PM
Subject: Re: [AMRadio] AM IARU Region 2 Bandplan


> I've read it time and time again!
>
> AM DSB is A3E without question.
>
> As the discussion I've been having off-list, I'll simply say that *IF*
> someone can REALLY pick up the fact that BC-610s and T-213s are running
> an extra 100cps on each sideband, then so be it.
>
> It has been running that way for around nine years at my QTH.  I'm not
> going to go through and start rebuilding the transmitter's audio chain
> to "trim" 100cps.
>
> I have enough of a time keeping the BEASTs reined in at 1500W PEP.  If I
> set the microphone resting current at the specified in the TM at 40ma,
> the darn thing WILL hit 2500W PEP.
>
> It's no different than running a commercial 1KW radio.  One has to watch
> carefully.  The FULL 1KW modulated at 100% will go over the specified
> power levels.
>
> I'm not going to try and find some obscure method, nor hack up a
> perfectly good transmitter to trim 100cps.
>
> Now, how many Johnson Invader 2000s are out there?
>
> I know of several!
>
> Bob - N0DGN
>
>> Try reading Part 97! It says not to use more bandwidth than necessary. 
>> And
>> 6KC is all that is necessary for AM. We are not supposed to be pretending 
>> we
>> are AMBC station. I know some people try.
>>
>> I just went through Part 97. There is no differentiation between AM and 
>> SSB.
>> It just uses the word PHONE. As far as I know both AM and SSB are A3E
>> modulation.
>>
>> Bob Macklin
>> K5MYJ
>> Seattle, Wa.
>> "Real Radios Glow In The Dark"
>>
>
> ______________________________________________________________
> Our Main Website: http://www.amfone.net
> AMRadio mailing list
> Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/
> List Rules (must read!): http://w5ami.net/amradiofaq.html
> List Home: http://mailman.qth.net/mailman/listinfo/amradio
> Post: AMRadio at mailman.qth.net
> To unsubscribe, send an email to amradio-request at mailman.qth.net with
> the word unsubscribe in the message body.
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
> 




More information about the AMRadio mailing list

This page last updated 15 Dec 2017.