| Boatanchors | 
      This is one of the most useful lists for those interested in
        restoring, maintaining and using (mostly) tube based communications and
        associated test equipment etc. It is a subscription list and the owner
        keeps a tight rein. It thus has one of the highest signal to noise
        ratios of similar lists. Traffic is moderate and there is some related
        buy/sell activity. The URL left will give you all the relevant
        information. | 
    
    
      | Premium-Rx | 
      This list is focused on 'high end' radio receivers. This means
        (mostly) radios that are microprocessor controlled and usually designed
        for military or commercial applications where cost isn't a major issue.
        With many of these radios becoming available, this list serves those who
        use and maintain them. This list is free, but those interested must
        apply to the list owner. Traffic on this site is light, and of very high
        signal to noise. There is little buy/sell activity. All the information
        is available at the URL to the left. | 
    
    
      | MilSurplus | 
      This list focuses on military electronic equipment: transmitters,
        receivers, test gear and everything related. It is a great source of
        expertise and experience, and has a high signal to noise ratio. Traffic
        is fairly heavy and there is a lot of buy/sell activity, but only of
        stuff related to the list purpose. You can subscribe through the URL at
        the left. | 
    
    
      | R-390
        List | 
      This list is concerned almost exclusively with the R-390A and related
        radios such as the R-389, R-390, R-391 and R-392. It can be very useful,
        especially for those who have just acquired one of these classic high
        performance radios, and need help before digging into its complex
        innards! The signal to noise ratio has not been good in the past, but
        has improved lately. There is buy/sell activity. You can subscribe
        through the URL at the left. | 
    
    
      | R1051
        List | 
      This list is concerned almost exclusively with the R-1051 series of
        radios, a successor to the R-390A. These solid state radios are very
        difficult to service and maintain, but well worth the effort. The signal
        to noise ratio on this list is high. Traffic is light and there is minimal buy/sell
        activity. You can subscribe through the URL at the left. |