1625 PENTODE TUBE AM BDCST/SHORTWAVE REGEN RADIO (530 KHZ TO 14.3 MHZ)

Description

I MAKE THESE TO ORDER, SO PLEASE ALLOW 7 TO 10 DAYS FOR SHIPMENT.
THIS IS THE OLD TRADITIONAL 1625 REGEN TUBE THAT YOU SEE USED QUITE OFTEN FOR REGENERATIVE RECEIVERS. MORE COLOR OPTIONS ARE AVAILABLE. PLEASE INQUIRE IF YOU PREFER GRAY, BLACK, RED, BLUE, ETC. SAME PRICE FOR ANY MOST ANY STANDARD COLOR.
THE COVERAGE IS CONTINUOUS FROM ABOUT 530 KHZ TO 14.3 MHZ, USING THE 3 PLUG-IN COILS PROVIDED. AS A BONUS I HAVE ADDED A ONE STAGE TRANSISTOR HEADPHONE AMPLIFIER, WHICH INCREASES THE VOLUME CONSIDERABLY. THE TRANSISTOR AMP IS PART OF THE CIRCUITRY, AND RUNS OFF THE COMMON DC B+ LINE.
YOU WILL ALSO RECEIVE A HIGH IMPEDANCE PIEZO HEADSET, USING DUAL PIEZO ELEMENT INSERTS. I MAKE THESE WITH NEW PARTS AT TIME OF ORDER (SEE PHOTO).
A WELL FILTERED 12 TO 14 VOLTS DC POWER SUPPLY (OR BATTERIES) IS REQUIRED TO RUN THIS RADIO (NOT INCLUDED).
HOWEVER, BEST PERFORMANCE IS ATTAINED BY USING A 12 VOLT SOURCE FOR THE TUBE FILAMENT AND A SEPARATE 18 TO 25 VOLT SOURCE FOR THE REGEN/AUDIO AMP CIRCUITS. YOU WILL HAVE MORE GAIN AND BETTER REGEN CONTROL RESPONSE WHEN USING A HIGHER VOLTAGE FOR THE REGEN/AMP CIRCUITS.
I HAVE PROVIDED A WIRING HARNESS WITH SEPARATE DC INPUTS, WHICH WILL ALLOW YOU TO SIMPLY HOOK THE TWO WIRES IN PARALLEL WHEN USING A SINGLE 12 TO 14 VOLT DC SOURCE.  BUT AGAIN, YOU'LL GET MORE GAIN WHEN USING THE 12 VOLT LINE FOR THE FILAMENT, THEN FEEDING THE PLATE B+ LINE WITH A SEPARATE 18 TO 25 VOLT SOURCE (30 VOLTS MAX).
THIS RADIO HAS MAIN AND FINE TUNING, REGEN AND ANTENNA COUPLING CONTROLS ON THE FRONT PANEL.
YOU'LL NEED A WIRE ANTENNA OF AT LEAST 25 TO 50FT IN LENGTH, ALONG WITH A GOOD EARTH GROUND. A 75 TO 100 LENGTH ANTENNA WILL PERFORM BEST ON THE LOWER FREQUENCIES. AS STATED, AN ANTENNA COUPLING CONTROL IS PROVIDED FOR ADJUSTING TO DIFFERENT ANTENNA LENGTHS.
I GUARANTEE THIS RADIO WILL WORK IF YOU HOOK IT UP PROPERLY. I'M NOT VERY GIFTED AT DRAWING, BUT WILL INCLUDE A HAND SKETCHED SCHEMATIC DIAGRAM OF THE CIRCUIT, PLUS A BLOCK DIAGRAM SHOWING WHERE TO HOOK THE ANTENNA, HEADPHONES, POWER, ETC.
THE RADIO WILL BE CONSTRUCTED WHEN ORDERED, BUT SINCE THE 1625 TUBE AND A LIMITED NUMBER OF OTHER PARTS ARE USED, I'M LISTING IT AS A USED ITEM. BETTER THAN 80% OF THE PARTS ARE NEW OR NOS.
THANKS FOR LOOKING......KW7T
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