![]() Also be sure your Delay setting on the Signalink USB is set to very short, I may have run mine at the shortest stop on the pot but I forget now. ![]() Once set up you can run with the knobs alone if you like. If you can't get levels high or low enough in the next steps, use those knobs. ![]() With the Signalink USB, set TX and RX knobs to 12 o'clock on the box as a starting point. Set the operating system default levels for the devices, input (Playback device, drive level) and output (Recording device and waterfall level) to 0% to start You will need to reconfigure digital software to select those new device names if you make this change.įind and select the device in your digital mode software configuration, I prefer the open source fldigi software. This is a good time to click the Playback tab and Properties and rename the Playback device to "Rig Drive Level" and the Recording tab device to "Waterfall Level". You get to the devices in Windows by going to Control Panel -> Hardware and Sound -> Manage Audio Devices. Just make sure your operating system sees the device. It should NOT be the default device for the operating system or alarms, bells, blips and beeps will all wind up going out over the air. Make sure the sound device that is being used, could be a sound card in a PC, could be a sound card built into your rig, could be an external sound card like a Signalink is set up the following way. ![]() In JS8Call it is the lever on the far right side in the lower pane, slide it all the way up. Set that number to 0, which is maximum drive. In FLdigi it's the number at the far bottom right corner next to the AFC button, left of the diamond (RX level indicator). (For SSB in USB mode)įind where your digital mode software sets its drive levels. The RF power output of the rig should be on its maximum output power, period. Put your rig in full output power, 100W or in some cases 150 or 200W output. The fix is pretty straightforward and requires thinking in a logical step by step from the origin of the signal source through to the transmitted signal. You will be able to run 1W through max power with ZERO ALC if you follow the instructions here just by controlling your audio drive level into the rig. This is what we are going to do here, just using the audio levels driven by the OUTPUT of your digi mode software. If you get close to the mic or raise your voice, the output power will go up. If you whisper into the mic, you will output very low power. You set your rig for 100W output, adjust your mic gain and away you go. If you exceed the range, you introduce distortion or compression and will have unwanted results. When dealing with audio chains, the path the audio takes from the point of origination to each progressive step from one stage of processing through to the final output has to be managed carefully to stay within the dynamic range of each stage. The rig itself if the mic input is used has the mic gain too high for the incoming audio level The rig itself if it has a built in soundcard has the menu levels too hot for the inbound audio level. The hardware interface or PC soundcard is set to too high a drive level These dongles are also prone to overloading (particularly from AM and FM stations in urban areas) due to rather limited (if it exists at all) filtering (as I've been reading in the various forums and blogs).Digi mode software or software packet modems have the audio output level too hot There'ss a wide assortment of modes and software that are mentioned here, including using FLDigi on Olivia and MFSK16 (not PSK31, yes, but the concept is the same here) There are a couple of errors in the article, but you get the idea that it can be done. Since you didn't mention which dongle you were looking at, this article by Nils DK8OK is on using the Funcube Dongle on various modes (it's a PDF). It certainly is possible - most likely you would need software like Virtual Audio Cable to get the data from the dongle to the PC. Such dongles include the Funcube Dongle Pro v2.0, SDRStick and the RTL-SDR with an appropriate up-converter (or one built into the board itself - there are a few like this, some of which are linked in the article below.) Unfortunately the Signalink is not a USB Dongle - it is an interface that feeds a soundcard.A SDR dongle is a whole 'nother animal.
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