---
title: Winlink on a Surface 2 Go and a TX-500
summary: >
  Mission: move all my hamradio stuff from the linux notebook to
  the Surface 2 Go (Windows 11).
date: 2024-05-11T23:53:55+02:00
# lastmod: 
categories:
- amateur-radio
tags:
- winlink
- digirig
- mobilinkd
- packet radio
- vara fm
- vara hf
- draft_post

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---

First let us start with what I used until now for any Winlink session that
I made (either at home or portable in the field/forest/mountain).

## The old setup (on a linux box)

I use a Lenovo X1 Carbon as my daily driver. It is quick enough and compact
and I used it for a while now for hamradio stuff too. I never did FT8 or
similar "messengers" on it though. In particular I did some winlink sessions
using [Pat] in combination with [rigctld], [direwolf], the [AX.25 tools],
[VARA] (HF and FM) and [ARDOPCF] (never got one connection from home).

[Pat]: https://getpat.io/
[rigctld]: https://hamlib.github.io/
[direwolf]: https://github.com/wb2osz/direwolf
[AX.25 tools]: https://packet-radio.net/ax-25/
[VARA]: https://rosmodem.wordpress.com/
[ARDOPCF]: https://github.com/Dinsmoor/ardopcf

A more precise note on how I established different connection types is
[already
written down in the article before]({{< ref "64-packet-radio-vara-mobilinkd-and-digirig-on-linux" >}}
"Packet radio, VARA (FM+HF), Mobilinkd, Digirig and the SignaLink USB on Linux").

## Using Winlink Express on a Windows computer

I plan to use the Surface 2 Go tablet for Winlink and related tasks.

![screenshot of an active VARA HF session](overview.png "This is my setup with Winlink Express and VARA HF in action.
I like to have the sound control open to adjust volume levels.")

## ARDOP setup

Following some screenshots showing my settings for ARDOP:

![screenshot of the ARDOP GUI](ardop.png "The classic Windows ARDOP program.")

![screenshot of the Winlink TNC settings](ardop-tnc-settings.png "Settings within a ARDOP Winlink session")

Set the desired drive level within these settings. I usually have to set it to <kbd>87</kbd>-<kbd>88</kbd>.

![screenshot of the Winlink Radio settings](ardop-winlink-settings.png "Radio settings within a ARDOP Winlink session")

I use a Lab599 Discovery TX-500 (with Lab599 as the CAT option).

I also use a Digirig and I can therefore use the COM port to trigger the PTT function.

![screenshot of the ARDOP settings](ardop-tnc.png "And finally the ARDOP settings")

## VARA HF setup

![](vara-tnc-settings.png "Settings within a Winlink VARA HF session")

![](vara-soundcard.png "Choosing the right soundcard and the drive level to fit the optimum ALC of the radio")

## What you have to look for

### Time synchronisation

Most digital modes rely on accurate time settings, so you may synchronise with a timeserver or use
the GPS mouse.

### RX signal

In ARDOP try to get your receiving signal withing the green bar. ![](ardop-signal.png)
The top blue bar will then change to green aswell.

In VARA HF make sure the left indicator is near the needle as in this screenshot. ![](vara-signal.png)

You can achieve this with different methods.

- Change the microphone level within Windows.  
  I try to leave this setting to <kbd>80%</kbd> but I sometimes have to adjust it a bit.
  It is good at <kbd>80%</kbd> for VARA FM, but for ARDOP I often have to increase it to <kbd>100%</kbd>.
- Change the REF level on your radio.  
  On the TX-500 I usually maintain a REF level of <kbd>-19</kbd>.

### TX signal

You may need to look into your radios manual to get the optimum value of the signal.
On the TX-500 I look at the DIG meter. Get the bar nearly full and you are good to go.
![](tx500-dig.png)
(The ALC meter on the TX-500 does not move a bit on my setup)