General Electric Super Radio I

Never much cared for AM/FM only Transistor Radios, especially boring GE's. I had read many time on several forums about the GE Super radios. Today I found one at Goodwill. A Model 7-2880B Which is one of the first models. Many people claim it is very sensitive and a good performer, but I am often skeptical. My test of any of these claims is how well they can receive KAZG. KAZG is a Daytime only station that drops to 50 watts at night. I plugged this radio in, at the store which was about 12 miles from KAZG and it was after sunset. Normally any radio I try, will pick up either nothing or just barely get a signal. This radio has promise because it was staticy but listenable. The final test is when I get home. My house is about 4 or 5 miles from the transmitter. After sunset the station is very staticy with most radios. With this Radio the station sounds almost as loud and clear as most other radios do in the daytime (for the same station). It even beats my Zenith Royal 780 The top contender of the portable radios I own.

 The large speaker and tone controls are a plus as well.

I tested it one night and I was able to pick up KNX 1070 LA 372 miles from me, and KKOB 770 in Albuquerque, NM 338 miles from me.

Refreshing The Fisher XP-9C Speakers Part III

Finally got a chance to work on these speakers again. I made a new frame for the speaker fabric. I was able to re-use the old fabric as it had not shrunk too much.

The picture below shows the frame under the covering because of the camera flash but it is not visible otherwise.

There is one final issue. one of the speakers has a problem with the "Fried egg" tweeters, they do not work unless pressure is applied to a specific point on their rims. I have them temporarily working with a pair of magnets. I will have to replace all of them at some point.

How do they sound? Great but, Very BASSY. Treble needs to be bumped a bit to compensate. I tested them with different records and CD's. They really like orchestral music. But sound good with Rock. They did not work well with my Beat Dominator CD. The bass was just a little too low for the crossovers. If I kept the volume at a reasonable level they could handle it, but turn it up too much and they cut out.

Replacing the Dial lights in a Mitsubishi M-F01 Tuner

I am writing this up in case anyone else is dumb enough to try it, and you want to know basically how to do it right.

The Mitsubishi M-F01 FM Tuner I got the other day had some burnt out bulbs, turned out 1 white bulb, and both green bulbs were out.

I made the HUGE mistake of removing all the screws on the faceplate to get to the bulbs.

HOWEVER! I did manage to get the bulbs replaced. I found that the old incandescent bulbs ran off of 9vdc and that they were all white bulbs with colored rubber covers, one bluish, and the other Green. The white light comes from the blue colored one and the green you can figure out yourself.

It is not necessary to remove the dial knob to remove the faceplate, it is not necessary to remove the faceplate (but I did)

When you remove the faceplate, the dial, and tuning knob fall out. Then the dial string unravels YAY!

In reality the only thing you have to do is remove the 2 screws that hold the circuit board in the picture below circled in red. Then carefully move the circuit board out of the way.

ANYWAYS... I don't have the bulbs and did not want to go on a quest to find some, plus I am impatient. But I did have these:
http://www.modeltrainsoftware.com/ledlights1.html

The LED's work on a wide range of voltages and it does not matter what polarity or if you have AC or DC. Being standard LED's they were also the same size as the old bulbs. The old bulbs were mounted on small circuit boards, three wires; blue, green, and Black. Blue for the white light, green for green light and black was ground.

I removed the little circuit boards and I connected 1 wire from the white LED to the Blue wire, one wire of the Red LED (I chose Red instead of Green) to the green wire, and then the remaining wires from both to the black. I used shrink tube as needed. I installed the bulbs in the dial with hot glue after verifying that they worked. I did this for both sides (there are 2 sets of lights).

I got it back together and restrung the dial.

Not on station!

On Station!

 

The only disadvantage to these LED's is that if you connect them to AC or unfiltered DC they may flicker juuuuuuuust on the edge of your perception.

I did not take any other pictures because I was too irritated and did not think I was going to get it back together.