VARA on FM 2M
I know many of us here are well experienced with VARA. I have been toying with the idea of trying VARA on FM but have been slowed trying to get my Icom 5100 to work with a Rigblaster while awaiting the release of the Icom 705. Well it looks like others are ahead of me with the idea of VARA on FM 2M, see this video link
Eric KJ4YZI shows how to use RMS Express with VARA FM AND already has Winlink server stations in his area on 2M. Very interesting.
you don't need a gateway to try out VARA FM. Only a buddy who is interested. Then set it up for P2P operations.
I would argue it is a lot more fun that gateway operations, too.
Assuming that your Rigblaster is connected to your ID5100 via the RJ45 mic port?
If so, consider getting a A/B switch and plug in your mic in one port and the Rigblaster in the other.
That way you can coordinate traffic on the same frequency with the other station.
You will find that VARA FM Narrow will work nicely with this setup and deliver speeds about 8x Packet.
As a side note for others who may read this: Generally speaking rigs with 6 Pin Mini Din connectors are a better choice if you want to get serious about digital operations.
But if you want to just play around for a while make it work with what you have. My first forays into digital were with a Baofeng, good outside antenna, Signalink and a friend.
Have fun experimenting!
73 de Oliver K6OLI
On Wed, Jun 3, 2020 at 04:43 PM, Oliver K6OLI wrote:
Have fun experimenting
The badge's , FM and HF are a little simplistic ,
Vara FM is intolerant of frequency displacement , having no AFC facility
this is inherent in a FM system , tx and recovered Rx tone's are always
identical [ frequency] . hence AFC was not provided.
But, out of the box, , could also be conveyed via Am or
perhaps pilot carrier SSB or AM- vestigial sideband ? ,
9600 , Requires a greater bandwith , as provided for 9600 packet
hence the need to use the 9600 option of the Tx/Rx ,
but is still essentially FM , with zero off set capability .
Vara HF is provided with AFC and is able to detect off sets, but
Can also be used over FM links , if the link is very poor or
Narrow bandwidth ,
During testing , I found with a local satation on 6 meters .
who , had high 'solar panel' wide band noise , switching from SSB
to FM tx/rx mode provided a higher maximum rate ,
Take a look at the V-Sat for chat , that has some novel
netting and measuring functions .. based on the HF modem
Not the inteded deployements , but room for experimentation -)