any ideas?

[bigboy250]

on what this is

 

[park]

A transverter ?

 

[Moleculo]

I think it's a small pre-amp. My guess is that the AM/SSB switch changes the RX filter width. I really have no idea what it is, but that's my educated guess.

 

[N9RZD]

on what this is

what kind of power does it require ?

my first guess would be a signal booster , or receive amp .
but the rf gain knob would tend to indicate that it's a tx amp ,
but prolly not much power ,

if remember right , bj electronics , was a one man shop right here in central illinois

he's long gone but some of his stuff still lives and breathes

does it have any freq spec's , ie , what band or set of freqs it's good for
looks rather small . maybe uhf or even microwave ?????

send me some pics privately , i have a good bud, who does a lot of high freq work ,

he may be able to help ,


73

 

[Captain Kilowatt]

My guess is that it is a small RF bypassed receive preamp. The RF gain adjusts the amount of RX gain and the SSB/AM switch selects the delay for the bypass relay.

 

[unit_399]

I agree with QRN. It looks like a small receive preamp with adjustable gain.

- 399

 

[Beetle]

but the rf gain knob would tend to indicate that it's a tx amp but prolly not much power

Receivers have "RF Gain" controls. Transmitters might have "RF Output" controls, but I've never seen a transmitter with an "RF Gain" control.

 

[Barefoot Pookie]

Yo open that thing up, look inside, see any 1446 pills?? Looks like a little amp with variable to me.

 

[N9RZD]

its been three days since my last post .

what kind of power does it require ?????
what type of connectors does it use ?????
any frequency specifications on it ?????????

been waiting for you to respond ????

 

[AudioShockwav]

I would also agree it is a RX Pre amp......easy thing to do is put it in line, turn the radio on and twist the knob....I bet the RX goes up n down.

73
Jeff

 

[TonyV225]

Those look to be preamps have you tested them out? If you havent yet run low power through them until you know what there tollerance or power rating is cool gadgets though