To all-
I have 2 DEM transverters for 900 MHz I built from kits. One has a 144 Mhz IF
and the other has 28 MHz. I have both crystals for each transverter but I
could also just use the 902 crystal and tune higher. The only issue is whether
the filters are too sharp to give me uniform gain but I think I could peak a 1
MHZ segment easily with only minor tweaking so I am inclined to just replace
the 903 crystal with the 902. I guess having both frequencies is the way to go
and it is easier than installing a switch where the oscillator is in an oven
type enclosure.Thanks for the input.
George, W1JHR
-----Original Message-----
From: Sean Waite <waisean@gmail.com>
To: Jarred Jackson <Jarred.Jackson@hotmail.com>
Cc: VHF Contesting <vhfcontesting@contesting.com>; specrisk <specrisk@aol.com>
Sent: Wed, Feb 14, 2018 6:44 pm
Subject: Re: [VHFcontesting] Calling Frequency Northeast on 900 MHz
I kind of wish we used 902.1 in New England. With SG lab transverters and my
ft290rii it'd eliminate a lot of knob turning. I was looking into switches on
the jumpers, it's not a bad idea with all of the potential options these things
have inside of them.
Sean WA1TE
On Wed, Feb 14, 2018, 18:21 Jarred Jackson <Jarred.Jackson@hotmail.com> wrote:
George,
I use both frequencies in western NY. Both my DEMI and my SG-Labs transverters
work using a 144/902 & 145/903 setup. One of my rover locations is next to a
commonly used repeater operating with an output of 145.11 and so 903.1 is
nearly impossible. In another location I get some kind of digital burst noise
on 902.1, so having a choice is important for me and its great when others have
a choice as well. The SG-Labs box also handles 927.5 just as well with an LO
jumper change. Wiring this out to a switch allows lots of options.
Jarred - KF2MR
________________________________
From: VHFcontesting <vhfcontesting-bounces@contesting.com> on behalf of G.
Vaccaro via VHFcontesting <vhfcontesting@contesting.com>
Sent: Wednesday, February 14, 2018 4:35 PM
To: vhfcontesting@contesting.com
Subject: [VHFcontesting] Calling Frequency Northeast on 900 MHz
In the past 903.1 was the weak signal calling frequency for weak signal work
in the Eastern US. . Due to interference, it has been suggested to use 902.1
which would make it the same for all the US. Have most East Coast stations done
this or is 903.1 still in use? I am interested in the June Contest and I am
debating installing a second crystal for the lower segment or just removing
the 903 crystal.
George, W1JHR, FN42
_______________________________________________
VHFcontesting mailing list
VHFcontesting@contesting.com
https://eur03.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.contesting.com%2Fmailman%2Flistinfo%2Fvhfcontesting&data=02%7C01%7C%7C0417b2d750ce41c84db908d573f2e16c%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636542409357334190&sdata=jNI3O1AoXGqqICdC3Txzj9mkAGapiIqNW0ZACe2ZXFs%3D&reserved=0
_______________________________________________
VHFcontesting mailing list
VHFcontesting@contesting.com
http://lists.contesting.com/mailman/listinfo/vhfcontesting
_______________________________________________
VHFcontesting mailing list
VHFcontesting@contesting.com
http://lists.contesting.com/mailman/listinfo/vhfcontesting
|