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Old 19th May 2024, 1:02 pm   #1
barryman
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Default Help in reconnecting a RX/TX to a Bush radio

I have a lovely Bush VHF 62 radio to which, many years ago, a friend wired up a receiver / transmitter in order that I could play music on my desktop PC upstairs and the RX / TX downstairs would pick it up and play it through the Bush radio. The RX / TX had the audio output lead going into the "pick up" socket at the back of the Bush,.

I've just come to try and use it again after many years and I'm getting nothing out of it. Unfortunately my friend is no longer around to advise me. The problem I have is that from the back of the RX / TX the audio leads clearly go into the back of the Bush. However, I still have a wire coming from the RX / TX with a USB fitting at the other end (I presume for power) but I cannot think where these lead would have gone !! I can't think what I ever could have plugged it into as the Bush radio is quite stand alone and the USB is certainly not plugged into the radio for power. Has anybody got any idea what this USB lead is for and how I can get this setup going again? . It was all working fine before I stopped using it. Photos attached.

Many thanks in advance
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Old 19th May 2024, 1:57 pm   #2
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Default Re: Help in reconnecting a RX/TX to a Bush radio

first try making sure the bush radio pick up is sensing, put the set into the gram mode and then place your finger on the pu socket, if you get healthy hum then work back along that lead , the usb lead would be a 5v supply for the device rx/tx

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Old 19th May 2024, 2:00 pm   #3
Graham G3ZVT
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Default Re: Help in reconnecting a RX/TX to a Bush radio

Unfortunately nether of the pictures shows the actual unit(s) of your question
These days there are incredibly cheap Bluetooth adapters that will connect to your radio input (you will probably need to change the Phono plug for a pair of Wander plugs)

As for the other end of the link, does your computer already have Bluetooth?
A lot of people use a smartphone or tablet as a signal source.
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Old 19th May 2024, 2:11 pm   #4
Nanozeugma
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Default Re: Help in reconnecting a RX/TX to a Bush radio

Could we perhaps see the RX/TX assembly that you refer to?
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Old 19th May 2024, 2:42 pm   #5
G6Tanuki
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Default Re: Help in reconnecting a RX/TX to a Bush radio

I would suspect more likely that the PC end has the USB lead that pretends to the computer that it is a soundcard. The red and black wires going to a separate power supply (12V) and then you tune the radio to an appropriate frequency to hear the output from the transmitter.

Some photos of the transmitter would be really helpful.
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Old 19th May 2024, 4:51 pm   #6
Gabe001
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Default Re: Help in reconnecting a RX/TX to a Bush radio

I remember you. Did I send you the lead?

If it's one of mine, the 3mm plugs go into the pickup and it terminates to a stereo female jack in a 3d printed box containing the stereo to mono summing resistors.

If so, plug a standard stereo cable into the jack and into an audio source which you know works, like a phone,and report back on whether that works. The male stereo lead plugged into the receiver ordinarily.

As others have said, put the radio on 'gram'

The usb lead from the receiver transmitter (if it's the one I recommended) is for charging the same transmitter/receiver. It plugs in a mobile charger (5v). Give it an hour of charge.

It pulses a blue led once it's charged and paired.

Last edited by Gabe001; 19th May 2024 at 5:02 pm.
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Old 19th May 2024, 5:12 pm   #7
Gabe001
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Default Re: Help in reconnecting a RX/TX to a Bush radio

Some pictures to show connections. The usb port shown is for charging

The reb and black 3mm plugs to set's pickup sockets, with set on 'gram' mode
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Old 19th May 2024, 6:11 pm   #8
barryman
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Default Re: Help in reconnecting a RX/TX to a Bush radio

I've added photo of RX/TX . It shows the leads that go into the pick-up sockets on the back of radio. Along those leads is the black box you can see. As I said in my post I have not touched it all for a couple of years and I have not removed anything or set it up again....it was working fine. There is no power light illumination on the RX/TX so somehow the unit needs power. But I don't remember having to plug the USB lead into anything. The USB lead is coming out of the back of the RX/TX unit. So where else would it be getting power charge from?

Someone has replied that I might need to wait an hour until RX/TX recharges but I still don't know where it would get it's charge from ! I'm pretty sure the USB is not required and don't know how it got there:-

PS I think I remember getting audio leads through this forum as the Bush did not take the normal type phono leads
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Last edited by barryman; 19th May 2024 at 6:19 pm.
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Old 19th May 2024, 6:20 pm   #9
Gabe001
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Default Re: Help in reconnecting a RX/TX to a Bush radio

That's the lead I sent you, but that's your own Bluetooth unit. That usb genrally goes into a 5v wall wart type usb charger for mobile phones (unless it came with it's own charger that uses an alternative voltage, which would be very unusual). Alternatively, you can use the computer's USB port to charge it.
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Old 19th May 2024, 6:40 pm   #10
barryman
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Default Re: Help in reconnecting a RX/TX to a Bush radio

Gabe - I have never had a charger unit anywhere near the radio so could not have charged it. Maybe I should try removing leads and try charging the unit from my phone charger ??
And your leads have always worked, right from the start. It's just finding the answer to charging the unit so I will take it over to my charger.
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Old 19th May 2024, 6:41 pm   #11
Gabe001
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Default Re: Help in reconnecting a RX/TX to a Bush radio

Yes, should be ok to use phone charger (just check that it provides 5v or so). Plugging the usb lead into your computer should also work.
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Old 20th May 2024, 3:29 pm   #12
barryman
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Default Re: Help in reconnecting a RX/TX to a Bush radio

Wow, it's so obvious now that charging the RX/TX was something I had to do back then !! I obviously forgot about having to charge the unit. Thanks for pointing this simple fact out to a simple person like me. All working fine and Pink Floyd coming through, loud and clear.

Thanks again
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Old 20th May 2024, 8:30 pm   #13
Gabe001
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Default Re: Help in reconnecting a RX/TX to a Bush radio

Thanks for updating. A good outcome. I'm happy for you.
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