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  #1 (permalink)  
Old 01-13-2018, 10:59 PM
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Default Realistic Patrolman 3A

I picked up a new (old) radio today - a Realistic Patrolman 3A:



I was browsing the RadioReference forums a while ago and came across some pictures of a similar model. After reading more about the Realistic Patrolman line of receivers, the search was on - I had to have one! After a few weeks of searching I found one on eBay that appeared to be in pretty decent cosmetic condition for $25. The radio powers up and I was able to hear the local NOAA broadcast and VHF Phoenix fire dispatch on clear as a bell! UHF reception is a little quiet and the volume and squelch knobs are a bit scratchy, so I'll be hitting those with some Deoxit and inspecting for any blown caps. The two bulbs on either side of the dial are burnt out, so I will likely replace those with a couple LEDs. Here are a couple more pictures:



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Old 01-14-2018, 7:29 AM
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Nice find
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Old 01-14-2018, 12:20 PM
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Has anyone ever changed a bulb like this before? It is wired into the board and has no markings on it:

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Old 01-14-2018, 1:03 PM
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I recently replaced two bulbs just like the one in your photo. The replacements are LED's and the device was an old stereo receiver, Advent 450S.

The PRO-3A is one of the first radios I owned, bought back in 1972. I do still have the service manual but the radio is long gone. The lamp is just connected across the power supply voltage (after the power switch) and is rated for 17V at 40mA. Use a pair of series-connected white LED's with an appropriate dropping resistor to permanently repair the lights.

At some point I'll get around to scanning the service manual. Service data for the PRO-3A is also available in part in the Sams Scanner-Monitor Servicing Data book, Volume 6 (SD-6).
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Old 01-14-2018, 2:20 PM
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Thanks, pro92b! I was at the store today picking up some more Deoxit and also looking at some replacement LEDs. Sounds like it should be easy enough to pick up a couple of those and a couple of resistors to get this thing lit up again. A service manual for this radio would be amazing! Please do post here if you are able to get it scanned one day. Google fortunately brought up the owner's manual, which was also very helpful.
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Last edited by call_sign_null; 01-14-2018 at 2:20 PM.. Reason: typo
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Old 01-14-2018, 3:10 PM
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The owner's manual does get around - I scanned it back in 2004. The service manual will be too big to attach to the forum but I'll contact you when I scan it.
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Old 01-14-2018, 8:52 PM
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Lightbulb

Quote:
Originally Posted by call_sign_null View Post
Has anyone ever changed a bulb like this before? It is wired into the board and has no markings on it:

Those were the channel indicator bulbs in my PRO-10 & PRO-77 scanners (before I replaced the scanning circuitry with a CPU and digital readout). I think I have a bunch around here.
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Old Yesterday, 10:52 AM
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gmclan, would you be willing to part with a couple of those bulbs for some cash? Shoot me a private message if so. LED replacements would be easy, but would be nice restore with the original style bulbs.
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Old Yesterday, 10:57 AM
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Beautiful radio, nice big speaker, a real good find. Enjoy it.

Boy do I miss Radio Shack!
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