This is not the first R-5000 which I own. It is difficult to find a
radio which works 100%. If you buy a used R-5000, you have to make
sure you buy one with the numeric key pad and the mode selector
intact. This is a major weak point of this receiver. Behind the key
pad is a membrane switch which after some time either oxidizes or
simply wears off. If this happens, several digits will show up
instead of just one when you select a frequency on the pad. Also,
the R-5000 becomes very hot when you power it with 230V. Bad for the
electronics! But if you find a good R-5000, buy it and operate it
with 12-14 V if possible because the reception quality is simply
outstanding. With some patience and luck I was able to find a new
one with the help of one of my colleagues. This R-5000 works
flawlessly. The numeric keys function properly and there are no
other malfunctions. To avoid over-heating, I installed a 12V
connection. Thus I can operate the R-5000 without the internal power
supply which is responsible for the excessive heat and the R-5000
stays within the normal temperature range. For AM listeners I
recommend the installation of the AM- 6KHz filter YK88A-1. It is
very selective but hard to find. As far as its reception quality is
concerned, the R-5000 is on par with the NRD-525 but just sounds
better.
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