Amateur Radio Stack Exchange
Amateur Radio Stack Exchange

Questions tagged [equipment-troubleshooting]

Questions asking how to solve problems with ham radio equipment.

52 questions
13
votes
3 answers

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. Chirp crashed, and now the radio won't receive. …
Benson
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8
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3 answers

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, however, I can't seem to locate any amateur radio…
rcampbell
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8
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2 answers

How to reduce VFO sensitivity to the hand capacitance?

I got a little tired of Si5351 and decided to build an analog CW transceiver. It's almost done and works pretty well. However, I discovered one problem. When I reach the VFO control with my hand the frequency shifts a little, about 100 Hz or so.…
Aleksander Alekseev - R2AUK
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6
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3 answers

Noise & shielding, SDR Dongle

First, I'm very new to SDR. This may turn out to be really obvious. I just want to verify my thoughts before I spend more dollars. I have a USB dongle with the RT28xx in it. Works great. Side by side I have a 35 year old Azden 2 meter receiver. …
David Hoelzer
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5
votes
1 answer

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't know whether this is the right way to measure or whether…
Geoabs
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5
votes
2 answers

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 strength exceeds the squelch threshold the radio…
Matt KI7CMZ
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5
votes
3 answers

Heathkit SB-102 Plate Current out of control

I bought a "technician special" Heathkit SB-102 transceiver. Everything seems to work well until I attach a dummy load and try to go through the "initial tune up" procedure in the manual. At the point where I switch the "Mode" to "Tune", instead of…
Zeiss Ikon
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4
votes
2 answers

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 HF bands (including 28 MHz and 50 Mhz), FT-991A…
Aleksander Alekseev - R2AUK
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3
votes
4 answers

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 working. I should mention my radio has been at my…
Geo...
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3
votes
1 answer

Why is IC-7300 transmitting at zero power in "Rig" split mode with WSJT-X and FT8?

I am successfully running FT8 with WSJT-X on Windows 10 with my IC-7300. I am using IC-7300 as the rig. On reading the official WSJT-X User Guide (and various YouTube videos, etc.) I see that many places strongly recommend running FT8 in split mode.…
QuantumMechanic
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3
votes
1 answer

BF-F8HP radios do not receive on 2m unless menu is open

I just got 4 BF-F8HP radios, 2 knockoffs, and 2 "legits"; definitions of knockoff and legit come from a website I found. All 4 of them are having this issue. I can transmit fine on both 2m and 70cm, and I can receive on 70cm fine, but I can only…
Jereme
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3
votes
3 answers

The amplifier does not work for hack rf one

Good day! I ask for help with repairing the hackrf one amplifier. Doesn't work at all. Accepts signals without amplifier, and LNA and VGA adjustment in SDR sharp works too! But when I put a tick on "Amp", then all signals disappear. As I understand…
Антон
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3
votes
1 answer

Troubleshoot ICOM IC-745 intermittently shows no power on transmit

I have an old IC-745 I bought used last year. Recently it seems to be malfunctioning intermittently. It is receiving well on all bands as far as I can tell. Sometimes when transmitting, there is no RF power shown on the meter. I've tried the built…
elplatt
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3
votes
1 answer

Kenwood TS 520 S Meter accidentally run without an antenna connected

I powered up my Kenwood TS 520 without connecting the antenna and after 1 hour realized it was not connected, after connecting the antenna I noticed the S-meter was not giving me a reading and I have no idea why
Ian Brown
2
votes
1 answer

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 unable or disinclined to repair it. Paul keeps…
Mike Waters
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