RAA1 Antenna Alternative?
- Thread starter steelgtr
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steelgtr
Well-Known Member
Or a work around.
I am not an expert on this item but make sure you get everything that came in the box. There is a long coax cable that runs from the RAA1 box to the back of the tuner (with special connectors, I think). Some auctions don't seem to include this.
My suspicion is that it is just a passive tuned circuit that you set to one frequency. It has trimmers for the capacitor and inductor but no no variable capacitor tuning knob. Older Mac tuners have an "ext AM antenna" spring terminal on the back that would allow creating a clone easy.
steelgtr
Well-Known Member
Is that a standard din connector on the back? Could try just soldering a length of wire to get the strong AM stations?
bob
JBL GUY
Addicted Member
Actually is it not passive, it is active.
The RAA1 Remote AM Antenna contains the tuned AM RF amplifier first stage circuitry.
The adjustments are adjusted much in the same way as similar adjustments on the first RF stage of an AM tuner.
The amplifier stage can be adjusted for optimum signal strength at both ends of the AM broadcast band.
The RAA1 Remote AM Antenna contains the tuned AM RF amplifier first stage circuitry.
The adjustments are adjusted much in the same way as similar adjustments on the first RF stage of an AM tuner.
The amplifier stage can be adjusted for optimum signal strength at both ends of the AM broadcast band.
JBL GUY
Addicted Member
I believe the RAA1 is the best way to go, but here are a couple of circuits.
The first one is very simple and has been built about a million times.
It is an untuned broadband RF amplifier.
The second one is a little more complicated.
The RAA1 an active antenna (it has a stage of RF gain) that is tuned and bandwidth limited to just the AM broadcast band and that is a good thing.
The actual output signal level and impedance may be important.
The first one is very simple and has been built about a million times.
It is an untuned broadband RF amplifier.
The second one is a little more complicated.
The RAA1 an active antenna (it has a stage of RF gain) that is tuned and bandwidth limited to just the AM broadcast band and that is a good thing.
The actual output signal level and impedance may be important.
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steelgtr
Well-Known Member
JBL GUY
Addicted Member
IIRC, yes.
I seem to remember that the RAA1 is not only the antenna and RF section, but it also contains the local oscillator section of the AM tuner.
Maybe others with a better memory than I have will chime in.
EDIT: I am not 100 percent sure about the oscillator part of this.
I am willing to stand corrected.
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andyo5
Active Member
When I spoke with Mac tech support, I was told that the RAA1 does actually contain part of the tuner circuitry. Apparently there is an advantage in being able to place that at a remote location. This is why you can't simply plug the unit into a tuner not designed for it.
c-atle-79bay
Super Member
Does anyone know a source of the connector? I need a cable, could also use bare pins.
