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I’ve been fooling with a yaesu that’s been giving me fits over the receive sensitivity. It only affected the 10, 12, 17 bands. It still had rx but unless I ran the preamp it was super low. Figured I had blown it. Instead of looking into it I felt super lazy because I figured it was all smd...

we have both fo these radios. both work well, however, no matter if you use the built in speaker or an external speaker they dont sound all that great on ssb. it almost sounds like theres a dsp running or the filter isnt wide enough. anyone else notice this? is there a cure? biggest downfall of...

https://buyantenna.com/index.php?route=product/product&product_id=671&search=Screwdriver

i know yall have read and gotten tired of reading me talk about the antenna. but here goes, after i took the mfj913 current balun down i went ahead and cut it apart. here it is. would it have cost all the much more to use insulated wire or just anything to keep it from shorting out? depending on...

i bought a chinese amazon autotuner. worked great till it didnt. replaced it and its all good. but back to the one that dont work. powers up, self tests, 9.99 swr in bypass, auto will not tune. it goes into tune and just locks up. will reset. checked diodes under swr bridge and they seem ok...

131.5' antenna cut at 70/30. 4:1 ruthroth balun at feed point 100uf 3k volt disk cap fed through between balun and long leg 1:1 Guanella coax choke below balun 106' rg8x coax 40' kinda sag flat top.

blue line is no calibration for the vna. sees all from end to end green line is a calibration that sees only the balun and the antenna. not concerned for 15m all that much. 80-20 split caused too much rfi here at the house.

yeah im a pest. i know. my wife reminds me daily. ive always been a yaesu fan but i picked up an icom 718 that has the dsp filter installed. its alright. it aint no yaesu hahah. alright anyway, some signals are crystal clear but some have an almost digital sound quality to them. ive turned the...

primary 3.55mhz 468/3.55=131.83 131.83x19.5%=25.71 131.83x80.5%=106.12 4:1 current balun 1:1 choke balun Harmonic Frequency Wavelength 2nd harmonic 7.1 hertz 42224289.85915 meters 3rd harmonic 10.65 hertz 28149526.57277 meters 4th harmonic 14.2 hertz 21112144.92958...

Has anyone got any input on using a 260’ long dipole cut for 1.8mhz as an all band antenna?

I can get one for $250.00. I’ve never had one of these. Are they worth a flip?

well its fall. finally. ive been running an ocfd with a 4:1 current balun for a couple years. good matching. easy install. running north to south in a more or less inverted vee. 45ft at the feed point. its all fine and dandy. but ive been wondering a few things. and yeah its the same old thing...

Here’s my mobile setup. Not shown is the mobile jpole and tarheel antennas

I bought a Chinese 898s dual band mobile. A cheap Chinese mobile. And that’s what I get. I know. Anyway, my group tells me the signal is fine but the audio is very quiet. Even with the mic apart where there’s nothing blocking the element it’s still very low. I’ve not found a setting in the menu...

I have quite a bit of this laying around. It is old television cable company transmission lines. I think it’s ps700 but can not tell, can’t find any information on the sheathing. It has a steel traveler on it for hanging overhead.

This is a 440mhz sweep of a comet 146mhz mono band antenna using rg8 coax. Yes I’ll be changing to lmr400 I’ve just been lazy. The sharp sawtooth pattern of purple and the fairly sharp swr pattern is what I’m curious about. Being new to really fooling with the higher frequencies I have to wonder...

Recently I went ahead and got into gmrs. I’m already in cb and ham so he’ll why it right? Come to find out, we have several linked repeaters in Arkansas. One guy has 3 simulcast repeaters set up locally covering a pretty big section of the state. Best I can tell, the repeater owners are hams...

I know that a jpole works without the need of radials. But, what happens if you add radials? Has that been modeled? Never considered it until today really. Would it pull the radiation angle down lower? Would it balance the field plot? Would it make your signal shoot straight into space and call...

https://www.diamondantenna.net/x50c2.html Anyone tried one for vhf/uhf base operations? Thoughts, opinions so on??

I need the factory file for this radio. I can’t get it to adjust the software menus from the service menu. Having some issues. So I figure I can dump a fresh file and it might correct some things. Some instructions would be good too