I purchased the Ameritron ALS-606/s in November 2018. I had to return it the first week because it was defective but, the company did send a replacement out quickly. I babied the amp, making sure the SWR was nil or at least below 1:2 at the highest and not driving it above 70w. Now just 8 months into use the amp just quit. First thing I did was to check the fuses. They were good. I checked the power. Also good. I called Ameritron and after talking to their "tec" person he just said to send it in. Now sent it UPS with insurance which was just over $100, Ameritron has the ALS-606/s. I called today and was told they have it but it will be 3-4 weeks before they will be able to even look at it. They never even botherd to email me to let me know it arrived. I strongly suggest avoiding buying this system since their support is lacking and customer service is non existent.