First nice designed box with smooth operation. Second very cute grandson. I'm looking forward to the next part and seeing if a PCB helps out. Sorry I can't add anything, never been into ham radios. Rick
I suggest you eliminate all of the capacitors created by all of the coax jumpers. Solid #14 copper wire or just the center conductors from RG-8x (pull it out of the shield). Since you are only dealing with HF just keep the wires comfortably distanced from each other. Sooner or later magic smoke will escape from the small diameter coax.
I know nothing of this subject, but I wonder if the relay coils will add noise inside the box? Is it as easy as putting the relays in their own isolation boxes?
Thanks for the input, They will only make an audial sound when changing selection on the switch as they open or close no electrical noise. The same style relays exist in the amp on the low pass filters to select the correct lpf to match the frequency band you select. RJ
@@LynxElectronicsLab To be clear, I am speaking of electronic noise, not audible sound. Won't the relay coils add electronic noise, and/or electromagnetic noise, as long as they are energized?
Sorry, That’s what I was trying to say. No electrical noise but of course a click when you change settings. My amp/radio is full of these type relays. Think of it this way, since we are talking 12v dc the coils are either not energized and so no noise or energized with steady current so no noise. To create RF you need a changing signal of variable current to produce RF. Hope that makes sense. RJ
@@LynxElectronicsLab Ahhh, yes, that makes good sense. I should have caught that myself. I was thinking of the Soft-Start AC/AC relay that I used for my DIY Isolation Transformer. That coil is AC. I imagine the AC voltage is just rectified within the relay, itself. Thank you.
First nice designed box with smooth operation. Second very cute grandson. I'm looking forward to the next part and seeing if a PCB helps out. Sorry I can't add anything, never been into ham radios. Rick
Thanks Rick, that video is being shot as we speak.
RJ
I suggest you eliminate all of the capacitors created by all of the coax jumpers. Solid #14 copper wire or just the center conductors from RG-8x (pull it out of the shield). Since you are only dealing with HF just keep the wires comfortably distanced from each other. Sooner or later magic smoke will escape from the small diameter coax.
Thanks for the input but I had already completed it and used larger coax. It's working very well at this point.
RJ
I know nothing of this subject, but I wonder if the relay coils will add noise inside the box? Is it as easy as putting the relays in their own isolation boxes?
Thanks for the input,
They will only make an audial sound when changing selection on the switch as they open or close no electrical noise. The same style relays exist in the amp on the low pass filters to select the correct lpf to match the frequency band you select.
RJ
@@LynxElectronicsLab To be clear, I am speaking of electronic noise, not audible sound. Won't the relay coils add electronic noise, and/or electromagnetic noise, as long as they are energized?
Sorry,
That’s what I was trying to say. No electrical noise but of course a click when you change settings. My amp/radio is full of these type relays.
Think of it this way, since we are talking 12v dc the coils are either not energized and so no noise or energized with steady current so no noise. To create RF you need a changing signal of variable current to produce RF.
Hope that makes sense.
RJ
@@LynxElectronicsLab Ahhh, yes, that makes good sense. I should have caught that myself. I was thinking of the Soft-Start AC/AC relay that I used for my DIY Isolation Transformer. That coil is AC. I imagine the AC voltage is just rectified within the relay, itself. Thank you.
No problem happy I could answer your question.
RJ