[VHFcontesting] [Fourlanders] [nfarl] 2 Meter AM

Robin Midgett robink4idc at gmail.com
Wed Jan 13 06:14:34 PST 2010


What antenna polarization would be used?

On Wed, Jan 13, 2010 at 7:47 AM, Rogers, Ron <RR124640 at ncr.com> wrote:
>
> Since this is basically a question for 2M AM operation in the South East, I would first recommend looking at the current 2 meter band plan as established by the South Eastern Repeater Association (SERA) and recommended reference material by anyone in the SE when scoping out band usage guidelines. This is the reference >
>
>  http://www.sera.org/2.html
>
> You will notice that the segment of 144.300 - 144.500 is labeled as "Multi-mode" which would cover AM operation and stay away from the recognized beacon bands. At one time, part of this segment was a AMSAT downlink band for some of the early OSCARs but to my knowledge, there is no active birds operating in that segment now, with the exception of 1 frequency still being used as a ARISS uplink. Check here for the latest >
>
> http://www.amsat.org/amsat-new/satellites/frequencies.php
>
>
> But, remember that 144.39 MHz is the national APRS packet frequency.
>
> I am aware of at least a couple of states still holding 2 meter AM nets and rag chews on 144.450 MHz. Given that none of the above references show any conflict with that frequency, I would recommend monitoring the frequency around the Atlanta area for awhile to see if there are any other users, other modes, etc. If you don't hear anything, try some QSO's there to see how it works for you.
>
> If anyone copied here knows of a potential problem around Atlanta by using the 144.450 MHz frequency, please chime in.
>
>
> Ron
> WW8RR
>
> W4NH Contesting Group
> Member, SVHFS
>
>
> -----Original Message-----
> From: fourlanders-bounces at contesting.com [mailto:fourlanders-bounces at contesting.com] On Behalf Of Bob Mantell
> Sent: Tuesday, January 12, 2010 2:08 PM
> To: nfarl at yahoogroups.com
> Cc: fourlanders at contesting.com; VHFcontesting at contesting.com; vhf at w6yx.stanford.edu
> Subject: Re: [Fourlanders] [nfarl] 2 Meter AM
>
> Hi John,
>
>  I do not know the answer, but would be interested in it, so I have forwarded your email  question out to some of the local and national groups that are VHF in nature.
>
> I have some 2 meter  tube AM gear also, including a CD Gonset rig with matching amp.  I will be interested in QSOs with you.
>
>
> I will forward you the answers as I get them,
>
> Bob
>
> 73 de Bob,
>
>  K4ESA EM74qc
>
> Bob Mantell
> k4esa at yahoo.com
>
>
> --- On Tue, 1/12/10, John <johnnykludt at earthlink.net> wrote:
>
>
> From: John <johnnykludt at earthlink.net>
> Subject: [nfarl] 2 Meter AM
> To: nfarl at yahoogroups.com
> Date: Tuesday, January 12, 2010, 6:43 PM
>
>
>
>
>
>
> Folks,
>
> I am interested in putting some of my restored 2 meter AM gear back on the air. Most of it is crystal controlled and so picking the right frequency is important. Unfortunately while on 6 the amateur radio community has settled on 50.4MHz for AM work no such consensus seems to exist for 2 meters. I can find no published standard for GA or the Southeast. According to "The AM Window" ( www.amwindow. org/freg. htm ) NYC-Long Island uses 144.28 MHz and LA uses 144.265 Mhz. The problem I see with 144.28 MHz is the presence of beacons in CO, VA, QC, ON, NB, TN and TX on the same frequency. The frequency used in LA is on the high end of the general SSB assignment (144.200 MHz to 144.275 MHz) and seems a good possibility.
>
> So my question, especially to those of you who operate 2 meter SSB is would AM operations in North GA on 144.265 MHz cause inordinate problems? If so, is there another 2 meter AM frequency already in use in GA/North GA and if so, what is it? Or is there another frequency that you can suggest?
>
> Two meters has always been a popular band. Before FM and SSB came along, it was the place many of us got started on AM phone. There is lots of vintage 2 meter AM gear out there. It would be fun to get some of it back on the air.
>
> Please advise,
>
> John, K7SYS
>
>
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-- 
Thanks,
Robin Midgett K4IDC
IDC Technology


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