24-11-2015, 11:56 AM
(This post was last modified: 24-11-2015, 12:01 PM by Eddystonepete.
Edit Reason: memory lapse
)
[attachment=13511][attachment=13510][attachment=13509]
Hi All,
I bought a MurphyTR230 for my wifes use in the kitchen, a nice tan one (£4 at the barrows) . I,ll come to the point in a minute. Anyway the TR230 wasnt very good on LW (R4 being the station of choice). so I considered a pantry tx on MW fed by an FM radio. I even made a board for it but never got as far as testing it. For the FM radio I bought a little module from China which proved to be so good I abandoned the Pantry thing and put the Module in the TR230 case.
This one
http://www.ebay.co.uk/itm/FM-receiver-mo...SwEeFVMWuX
It worked a treat. There are no instructions with the module but it has plenty audio power to drive a spkr in portable radio, 30 pre sets, an alarm function, variable mute level and probably other functions I hav,nt found. All for under a fiver. It seems to be a microcontroller fed by the 5 buttons generating I2c ? feeding a DSP radio chip feeding what is probably a class D audio stage. It even remembers the station tuned when powered down. For less than a fiver! .Eat your heart out Mullard! At the risk of offending purists heres a few pics of the TR230 as I first built it, not very neat but it worked so well my wife snaffled it before I could tidy it up.
Hi All,
I bought a MurphyTR230 for my wifes use in the kitchen, a nice tan one (£4 at the barrows) . I,ll come to the point in a minute. Anyway the TR230 wasnt very good on LW (R4 being the station of choice). so I considered a pantry tx on MW fed by an FM radio. I even made a board for it but never got as far as testing it. For the FM radio I bought a little module from China which proved to be so good I abandoned the Pantry thing and put the Module in the TR230 case.
This one
http://www.ebay.co.uk/itm/FM-receiver-mo...SwEeFVMWuX
It worked a treat. There are no instructions with the module but it has plenty audio power to drive a spkr in portable radio, 30 pre sets, an alarm function, variable mute level and probably other functions I hav,nt found. All for under a fiver. It seems to be a microcontroller fed by the 5 buttons generating I2c ? feeding a DSP radio chip feeding what is probably a class D audio stage. It even remembers the station tuned when powered down. For less than a fiver! .Eat your heart out Mullard! At the risk of offending purists heres a few pics of the TR230 as I first built it, not very neat but it worked so well my wife snaffled it before I could tidy it up.
