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From a recent photo on the FB group, it appears that Lab599 has been busy now with three variants of the transceiver: the original Discovery TX-500, the TX-500PRO and the Altai-ATU which has no-VFO dial, programmable frequency channels and an ATU. There is also a mention of a 100W amplifier (bolt-on like the battery pack) called the RA-500 (which looks like PA-500 in Cyrillic, although not the same as the DIY599 PA-500.

Hi all. I am wondering if it would be possible to make a change to the RF power adjustment in a future hardware update. It would be fantastic if power could be turned down even lower. At the moment the adjustment range is 10% to 100% of the maximum. I would like to experiment with power levels down to just a few mW. Is there any way the range can be altered in firmware so it's 0% to 100%? 73 M3KXZ

How does the TX-500 compare in the area of thermal performance compared to a KX2? (Or other rig you may have experience with) I had a KX2 at one time but I didn’t do any data modes with it. My FT-817 requires additional cooling to run more than 1 watt. Any experience to share? Im considering a TX-500 or KX2 purchase with a focus toward digi this time. KV4TT- Mike

The change log contains a one liner: Added the ability to edit memory cells using the PC application This seems a good idea, I just don't know which PC application can be used for this purpose. Does anybody has more information? 73 Stephan Update: I just saw that Lab599 posted the corresponding Windows software: > > TX-500 Memory cells programming application v1.02 (Win64) Update 2: I updated the firmware and tested the memory cell software and all seems to work as expected.

Everything seems to be working properly. Got one email and everything stopped working. Using the tx-500 and digirig plug into a Microsoft go 3. Can't connect to rms server = Can't send email. Anyone using this equipment? Can share?

Anybody know the recommended (or largest that would fit) wire gauge for fabricating cables with GX-12 connectors? -- 73, Norm/KC1BMD

When menu item *22 (TX Metr)* is set to display PWR, it also shows the SWR number to the right of the power graph - nice! It would also be nice if when the setting is set to SWR that it also show the PWR number to the right of the SWR graph. -- feature request. -- 73, Norm/KC1BMD

My understanding is that many rigs provide power to drive a USB device (e.g. such as the FTDI CAT cable shipped with the TX-500). Does anyone know whether it's the PC or the TX-500 that provides the power? -- 73, Norm/KC1BMD

Just saw this on the lab599.ru site. Interesting features compared to the standard TX-500 Production (lab599.ru) ( http://lab599.ru/products/tproduct/525989911-402795615551-transiver-tx-500pro ) 72 Dennis W6BFK

Any recommendation for portable logging software that can get frequency/band data from the TX-500 and also generate an .adif file for importing into a home station logging program? Windows or Android OS preferred. -- 73, Norm/KC1BMD

For the ones that are interested in the BP-500 battery pack, there is an official version 1.0 user manual on the Lab599 download page. 73 Stephan

Just an FYI for those discussing the BP-500... Oliver at DIY599 has a new battery pack design in the works call the BAT-500. The only thing available at the moment is a PDF with the specifications for the unit. There is no pricing available nor a lead time for production, however, it might be a good alternative to Lab599 BP. The BAT-500 is also setup to support the radio and the PA500 RF amplifier simultaneously. It may be an interesting alternative. Of course this is in development, but DIY599 has done a stellar job with the amplifier, so it may be worth the wait. Here's the link to the manual: https://1drv.ms/b/s!AmCwooBbjonB4H1XlR6wWffhbSWG?e=1hBklX Larry, WG9U

Has anyone noticed a drop in power w the new version the was a version change a while back that seemed to increase power i have a spreadsheet somewhere of a comparison test I did at the time i have an intuition that power is lower for the same level settings, I will run a comparison test when I get a chance anyone else notice anything?

Changelog: - Reworked mode of operating with memory cells - Added setting of switching between memory cells: encoder or +/- keys Have fun and 73, Stephan

After updating TX-500 Firmware to 1.16.04, I am testing using this radio for FT8 and other digital modes. I'm using DigiRig Mobile v1.6 and have working CAT control plus audio both ways. My struggle is that I am assuming when incoming audio to the radio is via the REM/DATA port, I should be using DIG mode plus Menu 09 Gain > DIG levels. Strangely to me I had to switch back to USB mode and use Menu 09 Gain > Mic levels to adjust sound card audio levels. I've been looking back through all the post history here and in other Lab 599 groups and I'm not finding others talking about this. I do see many helpful guides simply using USB mode without explaining why. Am I just being too logical to expect digital modes would use the radio's DIG mode and related adjustments? -- Grace & peace, Tim AF6TF