Questions tagged [equipment-troubleshooting]

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1answer
71 views

Yaesu FT-817 Won't transmit Dig, SSB or CW

I have a problem with my Yaesu FT-817 it Won't transmit Dig, SSB or CW, But it does transmit AM, FM and Pkt on all bands. Does anyone know what the problem might be. The Radio receives fine on all ...
4
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1answer
187 views

Yaesu FT-991A: FM and C4FM modes don't work on HF bands

I bought a second-hand Yaesu FT-991A. It works pretty well and by the look of it's internals I don't believe it was ever repaired. However I noticed one weird thing. When I try to use FM or C4FM on ...
2
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3answers
410 views

What causes my direct conversion 80m receiver to receive AM broadcasts?

I am making a Direct conversion receiver from this circuit at this website. I made it for the 80m band and I changed: The frequency of VFO to about 1.75 MHz L1 and L2 to a bandpass filter for 80m ...
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0answers
111 views

Troubleshooting ICOM PS15 Power Supply

I got a power-supply gifted by my friend. When I powered ON, the main (120V) FUSE blows up. I started by disconnecting the transformer from the control circuit and powered ON. This time the fuse is ...
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1answer
204 views

Another Yaesu G-5400B output voltage question

This question is very similar Yaesu G-5400B rotator controller problem, with a bit of a twist. I'm getting a consistent 5.84 VDC up to the rotators and the expected 0-5.84 VDC at terminals A1-3 and ...
2
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1answer
124 views

Faulty MFJ-259 - meter hits end stop on power up

I have a faulty MFJ-259, the early model I believe. When I power it up, the power light doesn’t illuminate, and the meter needles hit the right hand end stops. I immediately power down as I guess ...
1
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1answer
1k views

Repairing a Tecsun PL-660

Two years ago, my father and I both received a Tecsun PL-660 radio as a Christmas gift. We both have had good experiences with our radios and generally enjoyed them until they recently both stopped ...
2
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0answers
409 views

Does anyone repair Flex radios other than Flex Radio?

A local ham that I have an evening sked with on 75m (Paul, W0EBV) sent his Flex 5000 SDR transceiver to Flex Radio Systems to get it repaired a few months ago. However, it seems that Flex is either ...
0
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1answer
184 views

Kenwood TH-D72 Freeze on Splash Screen

Some friends and I recently placed a Kenwood TH-D72 on the summit of Saddle Mountain in Oregon, USA, and set it up as a temporary digipeater for use with APRS. The TH-D72 successfully digipeated ...
1
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2answers
246 views

Yaesu VX-8DE bricked after cloning. Any methods to revive it?

I seem to have bricked my VX-8DE yesterday after cloning it from a PC (using CHIRP) I was able to copy the data from the radio without problems. I edited it in chirp, then sent it back to the radio. ...
4
votes
1answer
83 views

Signal generator giving DC output?

My signal generator is giving DC at its RF OUT port. At 500 MHz & 1GHz it's giving nearly 1.5V DC when I measure the voltage between the centre pin & outer conductor with a multimeter. I don'...
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1answer
142 views

Issue with Icom R-71A

I have an old ICOM R-71a receiver that is giving me grief. The problem started off with audio and rf cutting out completely after being on for a few hours. The frequency display would work but nothing ...
2
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2answers
486 views

Yaesu G-5400B rotator controller problem

I'm currently facing a little problem with our Yaesu controller. I have done all the calibration and the controller appears to be working fine. Unfortunately, it does so for short duration (a couple ...
5
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2answers
1k views

Squelch never seems to “open the gate” on Wouxun KG-UV9D

I just got my Technician's license a few weeks ago and I'm trying to figure out if this is user error or if I need to return my radio. My understanding of squelch is that when the received signal ...
1
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1answer
247 views

Kenwood TS-440SAT Button Bounce or error code?

I was given a TS-440 that was lightly used. Being old it does need some work. This week I am doing the "Button Bounce" fix. Several of the buttons were bouncing so I pulled the component and ...
1
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2answers
2k views

Baofeng UV82-HX charger problem

I am having problem charging my Baofeng UV-82HX HT. No sooner do I put up the HT on the charger, it starts showing the error lights - green stable, red flickering. I bought this off the shelf in Nov ...
1
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1answer
161 views

Reception for FM stations is offset, but AM stations aren't

I have a Realistic STA-78 AM/FM Stereo receiver I recently rescued from my grandmother's attic. It hadn't been played in a while, but it appears everything is in working order except the FM dial. It's ...
7
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3answers
1k views

Why do I only hear broadcasts from 150 kHz to 29.999 MHz?

I am currently studying for my amateur radio license. Until I'm licensed, I'm trying to use a Sony ICF-SW7600GR receiver to listen in on amateur radio "phone" transmissions. No matter what I do, ...
2
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1answer
3k views

Baofeng UV-B6 transmits no audio

I have this Baofeng UV-B6 (the same as B5), and after using CHIRP a few times, transmission stopped working. In fact, it starts transmitting, but no voice is sent whatsoever — dead carrier. RX works ...
10
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2answers
4k views

How do I troubleshoot a Baofeng UV-5R that won't receive?

I have a couple of Baofeng UV-5R radios. I have a profile in Chirp that works great on one of them, and I foolishly pushed that profile straight over to a UV-5R without checking firmware versions. ...
1
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1answer
649 views

What denotes no RF output in SSB and CW? [closed]

I have that problem currently with my HF transceiver: no power output at all in SSB and CW, no matter which band / Frequency, but everything is ok in AM, FM and RTTY... There is also a big difference ...
2
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1answer
993 views

Kenwood TM241A making weird transmissions

I just got a used Kenwood tm241a. It was working fine on my friends antenna until I took it home and hooked it up to a used Larsen nla-mm antenna I bought at a ham-fest. It seemed to work fine on ...