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I already know the morse code as a CTR spook in USN back in the 70's. What would be my next step to learn more about ham radio. I am not technically educated. Local ham club, I suppose. Way the Navy taught us was 3 months, 8 hour days drilling the code. Start off with home row keys 3 letters a day. Once you learned the alphabet you concentrated on speed. For some reason we were taught 5 extra morse characters beyond our alphabet. Not until you got to the classes after your security clearance came through did you find out what the 5 extra characters were. Cyrillic. Russian. A Cold War/Vietnam Vet.

I have the RSP1A. The first thing I did, was to wrap the plastic case in aluminium foil. The 1B version with the steel case has some other improvements, but that shielding foil was "good enough" for me.

Great video ! i have a cb antenna on a 9 foot short tower right next to my steel 30x 25 foot Morton barn,it recieves well but the outgoing transmitting signal is low to everyone ,any suggestions? Im losing RF in the roof? Thank you for this informative video.

Thanks!

I have inverted vee insulated wire antennas. I am grounded through pass panel but am told I do not have static protection, just lightening. I even have arrestors in line. What more can I do?

Messi & Paolini in Italy makes excellent Coax and connectors. Top notch quality in my opinion!

I will always use a true dual receiver dualband mobile. I always keep either 2m simplex or my local repeater on one VFO, and I’m always scanning on the other VFO. Since I can’t financially justify buying a proper scanner to have as well, I use my mobile radio as a scanner essentially in addition to being a ham radio.

Thanks for this informative video. Is the double lobe effect of a dipole higher than one wavelength what produces false glide slopes on an ILS antenna system I wonder?

I have been using a full wavelength 80 meter horizontal loop for 40 years. it works wonderfully. yes you need open wire feed and balanced tuner

Thanks for some good advice David. I will probably never buy a new radio again, 1 because I cant afford it, and 2 because my Kenwood TS140S, that I purchased new a long long time ago works just as good as when it came out of the box. David HS0ZQA Thailand

Nice explanation. I really enjoyed it. I often forget about the ground influences. KC3SDV

Thank you, Dave. Enjoyed the comment about the polarity of RF noise. N0QFT

The 718 is over $1000 now, Up $400.😂😂

Thanks!

Isn't one of the big reasons that a Loop on Ground works despite not being very sensitive is because it attenuates vertically-polarized noise more than the horizontal component of the signal?

73 form hk6ser

Ty!! Great explanation. And as they say.. You can tune a guitar, and you can tune a piano. But you can never tuna fish! 🐟 🐠 🐡

Good explanation. Thanks, Dave. N0QFT

Thank you, Dave. N0QFT

Yes it will "work" with a poor match antenna but much better performance with proper antenna. Back to the rabbit ears with tin foil😊

Dave, do I need to install a Balun if I’m making a simple dipole antenna (using wire only) to only receive FM radio stations? Thanks Dave. Very educational video!

I suggest 30-50% of the ALC scale results in " Fall out", of your audio. As long as you remain inside the scale there will be no distortion. I recommend approx. 70-80% of scale as average and no more than 90%...Ever under a sustained " AhhhDo". This will also give you the ability to limit compression to no more than 5 db...which is what is really causing the distorted signal assuming you remain within the ALC scale.

WoW. Thanks to this video I looked back at the specs of my RSP1, yes the original, and I realized that it has a NF=12.5dB @3MHz while the newest RSP1B has NF=18dB @ 2-4MHz ! Should I conclude that my old RSP1 is better at HF? Quite hard to believe huh

The answer is simple. By Ohm's law, one can find out the current that has to be handled by the contacts in the relay (or any manual switch) when the power and the load resistance (here it is assumed to be 50 ohms) are known. A 100w switch can handle just over 1.414A. A 400w switch has to handle over 2.8A, which is double in magnitude. When we talk about working into 50 ohm resistive load (for the purpose of understanding the principles), there is no phase difference between the voltage and the current. Voltage handling of the switch is dictated by the spacing, and the current handling is by the surfave area of the contacts, both factors being in direct proportion. Arcing is due to more voltage in less spacing, resulting in the breakdown of the air dielectric. Less area of contacts handling more current leads to heating, errosion, (corrosion) charring and even welding (sticky contacts) ultimately resulting in failure. I just can't understand when you talk about inductance causing "inducting", etc De VU2RZA

Is a 4:1 balun also a choke. I am using balun but was wondering if adding a choke would reduce any common Mode Current that I may have.

These days, it more of just a CB mod.

Well explained, thank you. 73, KF0NNQ.

What about faraday cloth?

Linits?

Finally they made a antenna that has hf vhf uhf all in one antenna

Just curious as to why you think the dx commander is a novice antenna? I dont think that is correct. Agree regarding the instructions, they need revised, not withstanding the videos available.

For my magnetic car mount what is the best messi peloni coax for this thanks

Great explanation Dave. Thanks for the video.

Dave, it is my bad that I have to make a harsh comment here. At 5.04, it is you who is doing the misinterpretation of what happens in a coaxial cable; I feel sad that this is not the first time you say like this despite me trying to point out several times in your previous videos. Let me try to reiterate one more time for the benefit of everyone here. A coaxial cable behaves like three conductors all at the same time because of the phenomenon called the skin effect. Yes, HF (RF) current flows only on the surface of a metallic conductor. This is unlike the DC that occupies the whole thickness of the conductor. As the frequency of the AC (RF) gets higher and higher, the lesser becomes the thickness the current occupies due to the skimming effect. Consequently, the coaxial cable has three surfaces for the current to flow. 1. The outer surface of the inner conductor. 2. The inner surface of the outer conductor. 3. The outer surface of the outer conductor. Whenever a current flows on the outer surface of the inner conductor, there is an equal magnitude of current flows on the inner surface of the outer conductor but of opposite polarity. Suppose that the cable is connected to a voltage source (Tx) at one end and to a load (an antenna) on the other end. There won't be any current flowing on the outer surface of the outer conductor. The electric and the magnetic fields, due to the flow of currents inside the cable, would be confined to the dielectric medium of the coaxial cable. There should not be any current, I repeat, on the outer surface of the outer surface of the outer conductor. What you have failed to appreciate (or realize) after this long is quite evident, whenever you talk about CMC and grounding the coaxial cable before it enters the radio shack. By grounding, we mean only the outer surface of the outer conductor of the coaxial cable. Time and again, you talk about using a GDT type "static bleeder" on the ground stake. Let me reiterate that it is not a lightning arrestor (as often erroneously told by you and believed by many) but a static bleeder only. A static bleeder is no way near to a direct hit by a lightning bolt. You used to say again and again that a CMC flowing on the outer surface of the outer conductor can be grounded by a grounding rod attached to the coaxial cable before it enters the radio shack. That is a wrong assumption. Please try to consult the ARRL antenna book again and again to get a clear picture of the basic principles. Many people have great faith in your channel. Let them not be misinformed. Moreover you called the 450 ohm commercial window line as ladder line. Ladder line is one that is homebrewed to have an impedance in the range of 300-600 ohm depending on the spacing distance between the two conductors. The purpose of the windows or slots is two folds. One is to reduce the weight as you said. But the important reason is to leave only less polyethylene dielectric and more of air to maintain the characteristic impedance and at the same time to sustain high voltages that would occur due to high SWR. Yes, open wire, twin lead or ladder line is used on multiband wire antennas with more than 95% efficiency despite high swr. In high power commercial radio stations the open wires are used, as you all know. This is in the good spirit of radio hobby. De VU2RZA

Thank you, Dave. Mostly used coax for amateur radio. Has done the job. N0QFT

Thank you for picking my letter from w3oj

5:04 Yes, it is very easy to misinterpret, and I believe you have. Or you're making some other point which is totally eluding me.

Thanks!

Still miss the old leaning lamp

Hi Dave, how would you hook up an AmpKeyer made by Sunlight Energy Systems to you IC-7300 and and a Heath SB-200?

I was hoping you would explain how it works instead of just calling it weird. And your demo didn't show much as the screen was too far to notice any significant differences. And lastly your time lapse gave me headache. Other than that, great video!

The problem is Devil runs the world. He is lier and murderer. This is the reason why Hitler got the power, but Christ was executed as "blasphemer" and "rioter" by denunciation of clergy. That's why we've got the Gospel about the God's kingdom. Jehovah would put everything in order. The dead will be resurected and we'll meet our beloved ones again! :-)

Can I run shorter wire leads to the power supply instead of using the long leads?

Wow you still have a rotary phone.......sweet

I've the rsp2 (discontinued) for bout 6 years, and love it. I still dont understand all the features as the learning curve is steep. I wont give mine up.

I fought all day yesterday trying to figure this out for my Btech UV-50X2! Thanks for the simple fix!

Dave, I just received mine and upon inspection, it appears that the coils are very poorly soldered to the lug connectors. Did you notice an poor solder connections on yours?

LDMOS all the way. Palstar LA-1A with matching tuner

Excellent. Thanks.

As always, Dave, very well presented. I appreciated the solid review for an old timer who hasn't looked at the literature lately and who has "forgotten" some of the necessary good stuff. One quick note. As of April 2024, Martin Jue sent out a quick thank you note to all the suppliers letting them know that MFJ (and its ancillary companies - Ameritron, etc.) is closing up shop after over 50 years in business. Mr. Jue is retiring. MFJ will continue to sell through its existing inventories, but the day will come when it is no more as a supplier once inventories of various products exhaust. You might want to update this video with that information.