I need to do some adjusting. Where do I connect the leads of a frequncy counter on a Galaxy 949 and a Uniden Grantxl. It is a DD-1T 2. It has a 2 conductor shielded rca cable in the back.
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Frequency Counter Hook-up
- Thread starter Fdtrucker
- Start date
Never heard of that particular frequency counter.
Makes me wonder, just to start, how do you know that the counter is any more accurate than the radio?
If the ONLY input to the thing is that RCA socket, you can do exactly two things with it, more or less.
1)You can strip 8 or 10 inches of the shield from a cord with an RCA plug on one end, and wrap that center wire tightly around the outside of the coax that's plugged into the radio. A layer of electrical tape will keep it there. This will permit you to read the carrier frequency on AM TRANSMIT ONLY, and then only when you turn down the mike gain. Modulation will make the reading dance around randomly on AM and SSB both. Feeding a steady tone into the radio on SSB will get you a carrier that this counter can read, but the RF frequency you read will depend on the pitch of the tone.
2) You can plug an o-scope probe into the RCA socket with a plug adapter, to read internal frequencies by probing test points inside the radio. Unless the input is pretty sensitive, this trick may or may not work well enough to do alignment on the radio.
73
Makes me wonder, just to start, how do you know that the counter is any more accurate than the radio?
If the ONLY input to the thing is that RCA socket, you can do exactly two things with it, more or less.
1)You can strip 8 or 10 inches of the shield from a cord with an RCA plug on one end, and wrap that center wire tightly around the outside of the coax that's plugged into the radio. A layer of electrical tape will keep it there. This will permit you to read the carrier frequency on AM TRANSMIT ONLY, and then only when you turn down the mike gain. Modulation will make the reading dance around randomly on AM and SSB both. Feeding a steady tone into the radio on SSB will get you a carrier that this counter can read, but the RF frequency you read will depend on the pitch of the tone.
2) You can plug an o-scope probe into the RCA socket with a plug adapter, to read internal frequencies by probing test points inside the radio. Unless the input is pretty sensitive, this trick may or may not work well enough to do alignment on the radio.
73
I was hoping to align the radio. I will have to probe around to find the rx signal.. thank you nomad.
...runna pile-up on 6m SSB