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I built this kit & it work fine except I get to loud of a hum. I double checked every thing, even replaced the tube, check filters caps & other caps. tried others radios. Any ideas??
Asked by Anonymous on February 16th, 2017.
Unfortunately we are not techs and can not offer technical advise. You may want to take this to a repairman.
Most instances of hum on a high impedance input device such as this is in the case of a ground loop to the audio input. Unfortunately, most people replace the tube first. After 50-60 years sitting in boxes, if the tubes are not bad by now, they will probably outlast the builder.
Is the power supply ac or battery? Can't tell from the picture. Also, does it pick up the signal over the air from the cartridge, or is it hard-wired to the tone arm? Thanks.
Asked by Anonymous on October 2nd, 2015.
The power for this kit is A/C supplied. The signal is transmitted over air. The schematic and instructions are posted to preview.
Is this available with a 240V transformer?
Asked by Anonymous on November 2nd, 2015.
This kit is only available with a standard 110v transformer.
WHAT IS THE TRANSMITTING FREQUENCY FOR THIS SET UP - IE WHAT PART OF THE AM DIAL SHOULD i TARGET
Asked by Andrew More on September 22nd, 2016.
Per page five of the instructions manual posted above, you should target 1,100 and 1,600 KHz.
how do you connect an iPod? I don't seem to see a 3.5mm aux input.
Asked by Anonymous on October 20th, 2016.
This kit is designed for an antique radio and would need to be modified to accept a 3.5mm input. Any modifications would be at the builders discretion and should be researched thoroughly referencing the schematic and layout as this is not something we have attempted in house.
Mine worked good for years, thanks but I need a new power transformer. Is it possible to purchase one?
Asked by Anonymous on November 30th, 2016.
Hi, you can find the transformer for this kit by searching for P-T442.
Is there a way to add crystal to circuit to prevent drift?
Asked by Anonymous on February 22nd, 2017.
Any modifications would be at the builders discretion and should be researched thoroughly referencing the schematic and layout as this is not something we have attempted in house.
Does this actually comes with the tube and inductor?
Asked by Anonymous on October 31st, 2017.
Yes all parts are included to successfully assemble this kit.
Your description says it works with a cassette tape player. Will it transmit from a CD player as well?
Asked by Anonymous on November 2nd, 2017.
The instructions state that you can use the earphone output jack of a cassette player as an audio source. The same principle should work with a CD player. Modification may be required and any modification would be at the builder's discretion.
so anybody have any experience with adding a pre amp to this using another 12 volt tube like a 12ax7 or anything else?
Asked by Anonymous on December 20th, 2017.
We do not have any experience in modifying this transmitter.
Asked by Anonymous on September 5th, 2018.
This kit is not designed for long range use. It's design is to transmit wirelessly room to room in close proximity.