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  1. Im just beginning down my electronics journey but...

    Im just beginning down my electronics journey but id guess that a ferrite bead on the gate pin of the triac (likely a BT136 or similar device) would solve the issue.

    EDIT: This site makes other...
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    Base Radios Sounds like a mars cap mod was done to the radio...

    Sounds like a mars cap mod was done to the radio at some time. I would take ICOM's advice and just watch your TX frequency if the radio works as is.
  3. You could try a shorter whip on the center of...

    You could try a shorter whip on the center of your vehicle roof. If you use a 5/8 whip, switch to a 1/4 wave whip. Even if you clipped a 1/4 wave a little shorter and used a loading coil to tune it....
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    My question is now moot. Turns out plotting...

    My question is now moot.

    Turns out plotting the transformative effects of any impedance coax on a smith chart by hand is easier and faster than I originally realized. My fault for ending my smith...
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    Thank you for the response. Unfortunately, that...

    Thank you for the response. Unfortunately, that suggestion does not work. I asked this question elsewhere and had responses from people who have used VNAs their entire life completely miss the...
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    Base Radios After researching electrostatic precipitator...

    After researching electrostatic precipitator power supplies, My first course of action would be to call the power plant down the road and ask them at what times the device is in operation. Sounds...
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    Base Radios When RFI corresponds to certain times, it is...

    When RFI corresponds to certain times, it is always related to human activity rather than a hardware fault like power line micro arcing. Start by turning off all power on your property to eliminate...
  8. PLEASE>>>>> NEVER USE SQUARE WAVES IN RF DESIGN...

    PLEASE>>>>> NEVER USE SQUARE WAVES IN RF DESIGN (unless you are using them in mixers with tuned circuit filtering afterwards).. Square waves can be thought of as the combination of many many sine...
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    The 9310 is the ham variant as they were made of...

    The 9310 is the ham variant as they were made of inductor coils that didn't meet military specifications. The alternative is putting a whatever-you-can-find, cool looking whip on there, and...
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    I have that same amp, she's a fussy one and I...

    I have that same amp, she's a fussy one and I have yet to take the time to go through it and fix the issues. Check out the following, you might have parasitic oscillations happening....
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    Its not as long as those old bend-em-over whip...

    Its not as long as those old bend-em-over whip antennas, but id go with the ham variant of the military 9300 series, the "stealth 9310" autotuning antenna.
  12. They shouldnt hurt too much. If anything, they...

    They shouldnt hurt too much. If anything, they will introduce a tiny amount of capacitance and cause an insignificantly small reflection at the hooks.. at hf, with a tuner, you wont even notice they...
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    Normalizing impedance measurements

    The nanoVNA-F arrived and I am starting to chip away at my list of projects with it. I ran into a problem.

    I wanted to use my abundance of 75ohm coax for my SDR for FM broadcast reception so the...
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    K7KBN, I'm sure he'd be happy to trade you his...

    K7KBN, I'm sure he'd be happy to trade you his Baofeng for one of your HF rigs!

    Feenone, What is your location?
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    How far are you from the nearest repeater? Where...

    How far are you from the nearest repeater? Where I am, I cannot hit any repeater with my Baofeng and stock antenna. When I connect my baofeng to my homemade 8 element yagi through 50 feet of RG8, I...
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    My friend told me I should learn C#, php, and...

    My friend told me I should learn C#, php, and html in visual studio... i should have listened to him. If I had the knowledge, Id gladly help out on the forum. I once used excel to utilize photos and...
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    Mobile Radios The mic does work now, correct? 1106

    The mic does work now, correct?

    1106
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    Base Radios Do you mean it works out of band, but not in...

    Do you mean it works out of band, but not in band? That's really odd...
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    Mobile Radios I altered the picture you sent me in a photo...

    I altered the picture you sent me in a photo editor to show the proper wiring and emailed it back. I tried to post the picture here but I am out of storage space on this forum (hoping the admins can...
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    storage space

    Is there a way for the admins to allow a bit more attachment storage on this site? If we post a schematic, picture or other useful thing, our 4 or 5MB limit is rapidly consumed. This means we must...
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    Mobile Radios The problem with using wire colors and terms like...

    The problem with using wire colors and terms like that is that it creates the possibility for us to mislead you by accident. For example, audio could mean audio out or audio in, the radio's mic jack...
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    Base Radios If you have the FT-900AT, there could be an issue...

    If you have the FT-900AT, there could be an issue in the tuner section assuming the tuner is turned on. If not, the last thing would likely be the TR relay (RL5014) or the coax to the ANT port. If...
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    Mobile Radios 16v should be fine

    16v should be fine
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    Mobile Radios K7MEM, good catch on the capacitor value! I...

    K7MEM, good catch on the capacitor value! I grabbed the value from the circuit diagram of the HM12 in the service manual which is clearly not correct. At 200Hz, that's about 1700ohms reactance, far...
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    Mobile Radios Looking at the diagram it would appear that a...

    Looking at the diagram it would appear that a standard spst momentary switch between pin 5 and 6 (6 being ground) would activate TX. The mic utilizes pins 1 and 7 (7 being shield, 1 being audio). It...
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