{"id":10223,"date":"2019-07-30T13:59:18","date_gmt":"2019-07-30T17:59:18","guid":{"rendered":"http:\/\/www.engineeringradio.us\/blog\/?p=10223"},"modified":"2023-03-19T09:04:23","modified_gmt":"2023-03-19T13:04:23","slug":"a-few-pictures","status":"publish","type":"post","link":"https:\/\/www.engineeringradio.us\/blog\/2019\/07\/a-few-pictures\/","title":{"rendered":"A few pictures"},"content":{"rendered":"

Some things I have been working on lately:<\/p>\n

\"A<\/a>
A nice row of transmitters<\/figcaption><\/figure>\n

Finishing up a transmitter site rehab.\u00a0 The BE FM20T is nearly 20 years old.\u00a0 The BE FM2C transmitters are new.\u00a0 There is also a rack of new fiber equipment and CODECs.\u00a0 This site has good utilization; there are three stations on one tower with a shared STL antenna and generator.<\/p>\n

\"Energy<\/a>
Energy Onix ECO-6<\/figcaption><\/figure>\n

Energy Onix ECO-6 tube-type transmitter.\u00a0 One of Bernie’s better designs; a grounded grid tube with a solid-state driver section.\u00a0 This one needed some fans replaced and a new tube.<\/p>\n

\"AM<\/a>
AM transmitter site. Looks like these vines have not been cut in a couple of years.<\/figcaption><\/figure>\n

I wonder how much the guy tensions have changed…<\/p>\n

\"Noticed<\/a>
Noticed this after some particularly strong thunderstorms<\/figcaption><\/figure>\n

The reason why you do not use a POTS line phone during a thunderstorm.<\/p>\n

\"USS<\/a>
USS Slater radio room<\/figcaption><\/figure>\n

I took a tour of the USS Slater, a museum ship in Albany, NY.\u00a0 The museum has painstakingly restored the ship to its WWII configuration.\u00a0 The main transmitter is the RCA TBL-8 seen in the left\/center of this picture.\u00a0 This unit put out 200 to 400 watts CW or 150 watts AM phone.\u00a0 During the hostilities, it was turned off as allied ships observed radio silence unless they were sinking (and sometimes even then).<\/p>\n

\"A<\/a>
A little ChiFi tube-type RIAA phone preamp.<\/figcaption><\/figure>\n

I have been fooling around with this little 6AK5 preamp.\u00a0 I find it works very well and sounds better than the built-in phone preamp on my Kenwood VR-309.\u00a0 The FU-29 tube amp did not come with a phone preamp.<\/p>\n