(러시아) 자작 라디오 링크

 

 

http://k3uh.com/test/AM_Receiver.htm

 

Homebrew Radio Links - K3UH (Russ)

I've tried to list links where there is (1) a picture, and (2) a schematic. Some of the pages are in other languages, particularly German. Where I don't want to slog through in a half-understood language, I use Google's translation page. Try it; it opens new worlds. (Version 1.0.3, September 8, 2007)

New Keyword Search:

AM Receiver

#	Project	Comments	Sub-type	# parts	Tubes used
1	Piccolo 58 " - ein Batterie-Einrren-Einkreisempf舅ger	In German. Single-tube battery-powered single-stage receiver.	[-]	11.0	3A5
2	R馗epteur OC � tube	From French. Interesting breadboard approach.	0-V-1	12.0	ECC86
3	One Stage MW Receiver	[From German]. Schematic is at first link	0-V-1	16.0	EF89, EL95
4	Volksempf舅gerin People Receiver	[In German]. Schematic link is about 1/5 of the way down the page.	0-V-1	18.0	REN904, RES164
5	MW Audion with Tiltable Star Coils	[From German]. Click "Schaltbild" or "Diagram" for schematic"	0-V-1	21.0	ECL80
6	Roehren Audion	[From German]. His first instinct in finding period parts was "to break into houses in search of", but shopping was easier.	0-V-2	24.0	6D6, 75, 42, 80
7	2 Rren Audion ab 12 Volt verwendbar	[From German]. Picture only.	1-V-1	12.0	[-]
8	Razor-blade crystal radio	One to try with the cub scout troops.	Crystal	5.0	[-]
9	The Crystodyne Principle	From Radio News, 1924. Not sure I fully get this.	Crystodyne	8.0	[-]
10	Tube detector of Juergen Heisig	Third to last project on page. Uses a 6D6A sub-micro diode tube.	Detector	5.0	6D6A
11	Modern detector receiver	[From German]. Several examples	Detector	5.0	[-]
12	Detektor Receiver	[From German]. Picture only.	Detector	5.0	[-]
13	Detector receiver	[From German]. He replaces the semiconductor diode with a tube.	Detector	7.0	AZ1
14	Early detector receiver	[From German]. See last schematic on page for tube version.	Detector	7.0	30
15	Detector Receiver	[From German]. I like the use of color in schematics to show circuits.	Detector	9.0	30
16	AM Receiver with Pencil Tube and Spider Coil	[from Japanese] Uses subminiature tube (5678), and spider coil. Low parts count	Detector	16.0	5678(3)
17	MW Audion mit EF98	Single tube AM Receiver. No schematic, but you don't need one from the photo.	Direct Conversion	4.0	EF98
18	ONE TUBE "MATCHBOX" AM RADIO	Kind of cute.	Direct Conversion	5.0	1S4
19	Early Time Battery Tube Radio During (1925-1935)	Translated from Japanese. Scroll to bottom for schematic.	Direct Conversion	6.0	NVV-6A
20	Audio Receiver	[In German]. Original audion circuit.	Direct conversion	6.0	6K5
21	Mein Radiomann	[from German] No schematic, but you can figure it out from the photo. Tube added later (EF98); see text.	Direct Conversion	6.0	EF98
22	Rrenaudion	[In German] AM radio for a space charge tube (12V on the plate)	Direct Conversion	7.0	12AK5
23	Single sphere radio which used the spider coil	[Translated from Japanese] Actually, the tube is a subminiature pencil tube, not a sphere	Direct Conversion	7.0	5678
24	Tube Audion	[In German]. I'm guessing at the tube.	Direct Conversion	8.0	12K5
25	G Marconi痴 1-valve radio	First project on the page	Direct Conversion	9.0	3V4
26	Battery receiver with the DCC90	[from German] An update of a "tinkering article" from a German publication of 1960. Originally used a 3A5 tube.	Direct Conversion	10.0	DCC90
27	License Plate Radio	Just guessing on the circuit, as I don't see a bandspread capacitor, or any civilized attempt at a tickler winding.	Direct Conversion	10.0	6AG7(2)
28	The KC1-Batterieradio	[from German] Experiments with Telephone receiver speaker	Direct Conversion	11.0	KC1
29	Medium wave receiver with 2SH27L amplifier	[from German] Several boards cobbled together	Direct Conversion	12.0	2SH27L
30	Einkreiser mi ECC85 Doppeltriode	[In German]. Student project.	Direct Conversion	12.0	ECC85
31	The Smallest Radiomann	[from German] Uses a subminiature tube. Notice the connector for the variable capacitor.	Direct Conversion	13.0	6021
32	Radiomann	[from German}. Start here for a description of the German classic.	Direct Conversion	13.0	12AU7
33	Zweikreiser mit ECC88 und EL95	[In German]	Direct Conversion	13.0	ECC88, EL95
34	Radiomann	[from German] A classic. In Germany, at least.	Direct Conversion	13.0	ECC82
35	1925 French AM Receiver	[From French]. I guessed at the tubes.	Direct Conversion	16.0	30 (4)
36	227 Type Homemade Cathedral Radio in (1933-1935)	Translated from Japanese.	Direct Conversion	16.0	UY-227,UY-112A,KX-112B
37	Kratkovalvolina Audion (0-V-0) with EF183	[In Slovenian?]	Direct Conversion	17.0	EF183
38	Telefunken Radio, 1934	[In German]	Direct Conversion	18.0	REN916, RENS1376d
39	Pocket Tube Radio	Site in English and Japanese. Main page: http://www.hi-ho.ne.jp/ux-45/	Direct Conversion	19.0	6AB8
40	The Viet Cong Home Brew sets	No schematic (although there are references to possibilities), but interesting commentary and pictures	Direct Conversion	20.0	[-]
41	Bauanleitung f�r einen Nostalgie-Einkreiser	[In German] Relatively straightforward design; different style of breadboard	Direct Conversion	20.0	78, EL2
42	The Straight Receiver	[from German] Seems to be a discussion of the limits and possibilities	Direct Conversion	21.0	AF7,RES164
43	Two bands 1v2 Straight Receiver	Translated from Japanese. Remember 1-V-2 means 1 RF amplifier, a detector, then 2 audio amplifiers. I think.	Direct Conversion	24.0	12K7,12SJ7,12J5,12A6
44	Audion with AF7 and AL4	Old breadboard style with plexiglass front,	Direct Conversion	25.0	AF7,AL4
45	2 Tube AM Radio	Translated from the Japanese. Scroll to the right.	Direct Conversion	25.0	6BZ6,6AQ5A
46	0-V-1 Based on German VolksRadio	[In German]	Direct Conversion	27.0	EF80, EL84
47	N1NKM's 1-tube BTN AM Radio	From N1NKM. Looks like that tube is doing a lot of different things.	Direct conversion	30.0	15BD11
48	Polish AM Receiver from 1947	In Polish.	Direct Conversion	30.0	EF12, ECL11
49	Stations of Direct Amplification	[From French]. You'll have to do some work on this schematic to fill in values	Direct Conversion	30.0	[-]
50	Pocket Tube Radio	Site in English and Japanese. Main page: http://www.hi-ho.ne.jp/ux-45/	Direct Conversion	30.0	6WC5,6F7
51	Bettery-operated German Army Radio	[In German] Conversion of an existing receiver, it looks like.	Direct Conversion	33.0	DCH11, DF11 (2), DAF11, DL11
52	Zweikreis-Empf舅ger f�r Mittelwelle	In German. Two stage AM Receiver	Direct Conversion	33.0	EF80, ECL86
53	Polish AM Receiver from 1947	In Polish. Check out the barouque coils and transformers.	Direct Conversion	35.0	EBF11, ECL11
54	Battery-operated audion receiver (0-V-2) for medium wave	[from German] Uses Russian pencil tubes.	Direct Conversion	36.0	1SH29B(3)
55	Circuits FI pour r馗epteurs AM/ FM	[In French]	Direct Conversion	43.0	ECH81, EF80, EABC80, EM80
56	2V4-Audio	[From German] 2.4 Volts on the plate. Pretty cool, as the filament is only 2.2 volts.	Direct Detection	6.0	2SH27P
57	Double-tuned Crystal Set	"Double tuned" is big. And I like those knobs.	Double Tuned	6.0	[-]
58	Grid detection: Space charge tetrode	Translated from Japanese. Breadboard radio with explanation of theory of this kind of detection.	Grid Detector	9.0	UX-54
59	Grid-Leak 1-tube Receiver	A lot of useful theory and background on grid leak detectors.	Grid Leak	11.0	6AU6
60	Roehren Audion / Tube Receiver	Translated from German; 1st project on page	Grid Leak Detector	7.0	EF97
61	Rren-Detektorempf舅ger	In German. Simple detector radio. Who needs a chassis, anyways?	Grid leak detector	12.0	EAA91
62	Un Receptor Adecuado	[In Spanish] Basic circuit. From Chile.	Grid Leak?	6.0	27
63	Breadboard AM-er - "A Golden Oldie"	Basic circuit	Grid Leak?	6.0	27
64	1920's Interflex Receiver	Basically, a crystal receiver with a 30 tube added	Interflex	5.0	[-]
65	Magnetic Detector	Circa 1902- 1912	Magnetic Detector	6.0	[-]
66	Negadyne Recevier	[from German]. Some discussion on how (whether?) this works.	Negadyne	9.0	EF83
67	Hazeltine痴 Neutrodyne Radio Receiver (1923)	I like the way these JPG pages are laid out on an HTML page.	Neutrodyne	20.0	UV-200, UV-201A
68	Amplifier Stage for AM Receiver	Translated from the Japanese. I like the line "when excessively terrible omission is done, sphere flies and/or there is a possibility the house burning". Ah, Babelfish.	Reflex	5.0	UX-245
69	With 0-V-1 radio gymnastics	Translated from the Japanese. Or use a 19 tube, etc.	Reflex	8.0	UZ-30MC
70	Eines Einrren - Reflexempf舅gers	In German. From 1927. Looks like a technology dead-end. What was the point of this one?	Reflex	9.0	RE084
71	Reflex receiver of 1925 (Germany)	[From German]. You can tell that schematic symbols had not been standardized by 1925. Are those resistors or coils? I like his discussion of replacement parts.	Reflex	10.0	A408
72	Relex Radio	Translated from the Japanese. Part of this site's walk through the history of tube rigs. Uses a tree stump for a breadboard, sort of.	Reflex	12.0	3z-DH3A
73	"Interflex" tube design	Six pages. Change "iflex1" to 'iflex2", etc.	Reflex	12.0	216A
74	1-tube reflex receiver	Dave Schmarder. Highly recommended site.	Reflex	14.0	1J6A
75	Battery-Powered one-Tube Receiver	Translated from the Japanese. Runs on 9V and 4.5V batteries	Reflex	15.0	12AU7
76	" Diode-Triode " Reflex Receiver: Radio-Craft 1932	Translated from the Japanese. Scroll to the bottom of the page.	Reflex	15.0	85
77	Reflex (Triode/Pentode)	Translated from the Japanese. There are a lot of tubes that can do this.	Reflex	16.0	6F7
78	Homemade Three Tube Reflex Radio in 1930-1932/1930-1932	Translated from Japanese.	Reflex	18.0	UY-226,UX12A
79	Pocket Tube Radio	Site in English and Japanese. Main page: http://www.hi-ho.ne.jp/ux-45/	Reflex	20.0	1T4(2)1DN5
80	Pocket Tube Radio	Nice pocket picture! Fun packaging, too. Site in English and Japanese. Main page: http://www.hi-ho.ne.jp/ux-45/	Reflex	20.0	6BH6,6AB8
81	2-tubes reflex super-het using Russian sub-mini tubes	Site in English and Japanese. Main page: http://www.hi-ho.ne.jp/ux-45/	Reflex	20.0	1J24B,1J29A
82	ST-Tube "Pocket" Radio	The ST tubes in a pocket package are a foot. Uses DC-DC converter. Site in English and Japanese. Main page: http://www.hi-ho.ne.jp/ux-45/	Reflex	20.0	1E7G,1F6
83	Single sphere reflex super	Translated from the Japanese	Reflex	22.0	6U8
84	Receiver With No Resistors	Interesting trick. Now try it with a tube.	Regenerative	4.0	[-]
85	Anntena-Less 1-Tube Regenerative Receiver	But you have to connect it to a water pipe . . .	Regenerative	5.0	30
86	One tube regenerative radio	As simple as they get	Regenerative	7.0	31
87	Replica of Air Champ AC-100	Replicating a popular kit from the 1950's.	Regenerative	7.0	3Q4
88	D騁ectrice � r饌ction	From a French journal, a simple one-tube receiver. Page also has schematics for 2,3 and 4 tube receivers	Regenerative	7.0	30
89	Original Armstrong Regenerative Radio	Here it is, Armstrongs original circuit straight from the patent application	Regenerative	7.0	10
90	Homebrew "Vario control" Regenerative Receiver	Put that variometer to work.	Regenerative	8.0	30
91	Geradeausempfaenger (Straight-Through Receiver)	[From German]. I like the way he explains in detail what is going on in the circuit. Just about any tube can be experimented with here.	Regenerative	8.0	[-]
92	Basic Regenerative Receiver (In Spanish)	In Spanish on JPG file, so the translators are useless	Regenerative	8.0	A110
93	Homebrew regenerative 1-tube receiver	Nice pictures and layout	Regenerative	8.0	71a
94	One Tube Regenerative	From an Australian Source. Doesn't get much simpler	Regenerative	8.0	1T4
95	Regen Built By 12-year Old	From a magazine article (included) on building a one-tube emergency radio.	Regenerative	8.0	1S5
96	Audion Receiver	[From German]. Another radiomann style receiver. Notice the hand-fabricated components	Regenerative	8.0	EF98
97	Crosley 51 AM Receiver	Bare bones and ancient. Look at that front panel.	Regenerative	8.0	UX-201 (2)
98	Simple AM Regenerative	A lot of radios on this page; scroll down and follow the link to a schematic.	Regenerative	9.0	3V4
99	Before the Radiomann, there was the Ur-Radiomann	[From German]. I like the variable coupling on the coils. Also the battery box at the bottom of the page. Notice on the first schematic the virtual absence of labels	Regenerative	9.0	RE034, RE084
100	Amplifier added to Flashlight Battery Set	From Popular Mechanics, Late 1930's	Regenerative	9.0	49(2)
101	Low Voltage Receiver	They aren't kidding: 4.5 volts on the plate.	Regenerative	9.0	P220(2)
102	One Tube Regenerative Receiver	From Alfred Morgan's First Book of Radio and Electronics. Probably any Triode (6C5, etc.) will do.	Regenerative	9.0	6BF6
103	Single triode regenerative.	Dave Schmarder. Highly recommended site.	Regenerative	9.0	30
104	French regenerative detectors	[In French] A lot of history goes with the page.	Regenerative	10.0	C119
105	The Elf, a 2-Tube Set for the Beginner	From Radio-Craft, August, 1936	Regenerative	10.0	49(2)
106	Das Pentoden-Audion	Simple version of MW receiver using 12J1L	Regenerative	10.0	12J1L
107	3Q5 regenerative receiver	Dave Schmarder. Highly recommended site.	Regenerative	11.0	3Q5
108	Regenerative Detector	Simple, with tips for beginners.	Regenerative	12.0	6AU6
109	1-tube super-regenerative VHF receiver	Actually, this is centered on 123 MHz, good for air band listening.	Regenerative	14.0	12AU7
110	Early 1920's Regenerative	[From French] First project on the page (there are two more below it)	Regenerative	14.0	201A (?)
111	Four Tube Eliminator Radio in 1930s	Translated from Japanese.	Regenerative	15.0	26(3), 27
112	Twin Triode Regenerative Receiver	From N4JVP	Regenerative	15.0	12AT7
113	One Tube "0V0" Radio Detail	Great approach to trying many tubes. He has a comparison table of about 20 tubes substituted in the same circuit.	Regenerative	15.0	6CB6
114	RCA/Westinghouse Regenerative Receiver	3-tube regenerative battery set. 1921. Another classic.	Regenerative	15.0	UV-201 (2)
115	The 0V1 with 6LX8 (LCF802)	[from German] Why this particular tube (the 6XL8)?	Regenerative	16.0	6XL8
116	Two-tube BCB Regenerative	Dave Schmarder. Highly recommended site.	Regenerative	17.0	1T4 (2)
117	Lil-Gem: Small AM Receiver	Go ahead, shock yourself with these dangerous things. Isolation transformers should be added.	Regenerative	17.0	35C4, 12AU7
118	A 2-valve miniature	Second project on the page	Regenerative	17.0	1T4,3V4
119	ST tube 3 sphere radio	[from Japanese] Common circuit.	Regenerative	19.0	77,41
120	6C4-6C 42 sphere radio	[Translated from Japanese]	Regenerative	19.0	6C4(2)
121	Low Voltage Regenerative Receiver Using Mains Voltage Valves	From DL4OBG. Uses certain regular tubes at 12V on plate, not space charge tubes.	Regenerative	20.0	12AU7(2)
122	4-tube Regenerative Receiver	Very nice construction techniques	Regenerative	21.0	222 (2), 201A (2)
123	The Russian Liliput - an MW audion with 3 * 12SH1L	Translated from German.	Regenerative	22.0	12SH1L
124	6BJ6-6AK 62 sphere radio	[Translated from Japanese] Clean construction; uses AM radio parts to make . . . an AM Radio!	Regenerative	22.0	6BJ6, 6AK6
125	EF50 Receiver	http://www.g4jcp.freeserve.co.uk/pw/mar03.htm	Regenerative	22.0	EF50(2)
126	Regenerative AM Receiver	Translated from the Japanese	Regenerative	25.0	6BN6,6AW8
127	Battery Powered Tube Regenerative Receiver	K5BCQ asks "How would I improve the AC-100?"	Regenerative	26.0	1T4,1U4,3S4
128	Two Tube Radio Operated with DC 24V	In Japanese	Regenerative	28.0	12AU7 (2)
129	Einfachst aufzubauender 1-Stunden-Empf舅ger mit einer Subminiatur-Rre	In German. one-hour radio with subminiature tube	Subminiature tubes	8.0	2E32
130	Original Armstrong Superheterodyne Radio	Scroll down a little from the regenerative to see the handwritten original schematic for a superheterodyne.	Superheterodyne	20.0	10(4)
131	Pocket Tube Radio	Site in English and Japanese. Main page: http://www.hi-ho.ne.jp/ux-45/	Superheterodyne	20.0	5678,1V6
132	4 Rren Audion mit Miniatur Rren	[From German]. Picture only.	Superheterodyne	20.0	[-]
133	Pocket Tube Radio	Site in English and Japanese. Main page: http://www.hi-ho.ne.jp/ux-45/	Superheterodyne	22.0	4-SmT(2)
134	Am Receiver with Miniature Tubes	Translated from Japanese	Superheterodyne	24.0	5678(3),1AD4
135	Pocket Tube Radio	Site in English and Japanese. Main page: http://www.hi-ho.ne.jp/ux-45/	Superheterodyne	24.0	1AG4,CK533AX
136	My First Catalin	Not really a homebrew project, alhough the schematic is here. Is that a dog to the left of the girl in the picture at the top, or a shadow?	Superheterodyne	25.0	1R5, 1T4, 1S6, 3S4
137	4 Spheres one Way Portable Receiver	Translated from the Japanese	Superheterodyne	25.0	DK96,DF96,DAF96,DL96
138	Build a Minidyne (miniature superheterodyne)	Popular Science, 1956; single tube reflex receiver	Superheterodyne	25.0	6U8
139	Gachapon capsule 3 tubes reflex super het	[from Japanese] A superhet built inside a round plastic capsule. "Gachapon machines are small vending machines of toys."	Superheterodyne	26.0	5678(3)
140	Pocket Tube Radio	Site in English and Japanese. Main page: http://www.hi-ho.ne.jp/ux-45/	Superheterodyne	26.0	1AG4,1AJ5,CK526AX
141	3-SmT tubes reflex super het	Site in English and Japanese. Main page: http://www.hi-ho.ne.jp/ux-45/	Superheterodyne	26.0	5678,1AJ5,1AG4
142	5 spheres 2 way Portable Receiver	Translated from the Japanese	Superheterodyne	28.0	1LN5, 1LA6, 1LN5, 1LD5, 3LF4
143	Miniature Tube Portable Superheterodyne Receiver	1960's version from RCA Receiving Tube Manual	Superheterodyne	28.0	1R5,1U4,1U5,3V4
144	Two Tube Radio Operated with DC 24v	Translated from Japanese.	Superheterodyne	28.0	12AU7(2)
145	6 Sphere Magic Eye Attaching Portable	Translated from the Japanese	Superheterodyne	30.0	1AH5, 3C4, 1AB6, 1H3, 1AJ4(2)
146	A 4-Tube Minimal Space-Charge Superhet	In Japanese	Superheterodyne	30.0	12AD6,12EZ6,12AE6,12K5
147	Portable Battery Superhet Receiver	Second project on the page.	Superheterodyne	30.0	1R5, 1T4, 1U4, 3S4
148	Pocket Tube Radio	Site in English and Japanese. Main page: http://www.hi-ho.ne.jp/ux-45/	Superheterodyne	31.0	12FR8
149	Zweirren-Superheterodyne-Empf舅gers f�r Mittelwelle	In German. AM 2-Tube Receiver	Superheterodyne	32.0	ECH87, EL84
150	3 Bands, 5 Valves Radio	Schematic only. Mature AM Radio	Superheterodyne	33.0	UCH81, UF89, UBC81, UL84, UM84
151	Miniature Tube Portable Superheterodyne Receiver	Using 45V "B" Supply	Superheterodyne	33.0	1R5,1T4,1S5,1S4
152	Superheterodyne with ECH83	[In Slovenian?]	Superheterodyne	34.0	ECH83, PCF802 (2)
153	mT tube transformerless 5 sphere super	[Translated from Japanese] All-American 5 Tube lineup	Superheterodyne	36.0	12BE6,12BD6,12AV6,35C5,35W4
154	BCB AA-5 superhet, made with space-charge tubes	In Japanese	Superheterodyne	36.0	12AF6(2),12AE6,12AG6,26A6(2),12K5
155	4 spheres super / American type	Translated from the Japanese	Superheterodyne	36.0	12AD6, 12EZ6, 12AE6, 12K5
156	"compAA3" Compactron AM tube radio	Weird tubes. (Filaments add up to 58V, or half of 117V).	Superheterodyne	37.0	11AR11(2),8B10,38HK7
157	AM FM Tuner	Seems a bit much work	Superheterodyne	38.0	6K7,12AT7,6J7,6SC7,6CM7
158	1971 Era BCB Superhet	On a Japanese site, in English. See http://www.geocities.jp/shoranosekai/EnglishVersion.html for main link page to internals and schematic.	Superheterodyne	38.0	6BE6, 6BA6, 6GW8
159	The All American Five - A Circuit Walkthrough	This is a fun read. Article explains the cost considerations that drove the design	Superheterodyne	40.0	12BE6,12BA6,12AV6,50C5,35W4
160	Ein Einbereichs-Super - Selbstgebaut	In German. Self-built suerheterodyne. Check out that AK2 tube. You were expecting two pins?	Superheterodyne	42.0	AK2, REN904, RES164
161	4 sphere 2 bands portable	Translated from the Japanese	Superheterodyne	44.0	3Y4, 1AH5, 1T4, 1l6
162	All American 5 sub-mini tube AM radio, what if?	Pencil tube modified All-American 5	Superheterodyne	45.0	12BE6,5702,5703,5898,50C5,35W4
163	AAF pencil tube superheterodyne	Sooner or later someone was going to try this. Great pictures.	Superheterodyne	46.0	5702 (3), 5704, 6111
164	9 sphere 2 band high 1 2 receiver	Translated from the Japanese	Superheterodyne	53.0	3E6(2), 1LN5 (3), 1LA6, 1LC6, 1LD5, 3LF4
165	Home Brew Two Tube Farm Radio	From Grandad's Electronics (scroll to bottom of page)	Synchrodyne	32.0	3A8GT, 1D8GT
166	Atwater Kent 20 Compact	Build a clone of a classic!	TRF	20.0	01A (5)
167	Grid detection: Triode	Translated from Japanese. Great page! He shows a half-dozen pictures of antique tube types running in the circuit.	Triode	10.0	111B
168	1920's Dutch Homebrew	AM receiver. No schematic, but it痴 a TRF. Notes say the poor guy never got it working.	Tuned Radio Format	18.0	A409 (3), B406
169	Variometer-based Receiver	In Italian. Nice looking piece.	Variometer-Based	14.0	124
170	Various homebuilt radios	Looks like possible Popular Mechanics or Popular Electronics. one bug PDF file with about 25 radios. Should break this up.	Various	20.0	[-]
171	Tube-based VLF recevier	I'm not sure how to classify a project like this, but it looks like a good introduction to VLF where the origins of the signals are geological.	VLF	24.0	ECC82
172	Einfaches Taschen-Radio mit einer Rrre	In German. Simple tube-based pocket radio.	X	6.0	P700
173	One tube interflex radio	Elegant arrangement. No schematic	X	6.0	30
174	1-tube radio (5678)	Very miniature tube, the 5678 (Cost about $3 each)	X	6.0	5678
175	Homemade Single Tube Breadboard Radio.	From Dave Schmarder	X	6.0	01A
176	Circuit for Crystal Radio With one Tube Amplifier	Second half of the page	X	6.0	30
177	One Tube Emergency Receiver	Uses one subminiature tube	X	7.0	1S5
178	Low cost progressive receivinfg	Built on slats	X	7.0	6J6
179	Radio reazione	Gets my vote for one of the most beautiful. Note the butterfly mounted in the center of the loop antenna	X	8.0	6KTG
180	RCA "Prep Kit" Radio	Schematic printed right on the board	X	8.0	1T4
181	Single tube radio you can mail	The whole thing is flat, so it can be mailed in 6x9 envelope. Cute.	X	8.0	2E32
182	6SN7GT-based AM Receiver	A Danish translation of a US Popular Mechanics article, from a German web site. No frills.	X	8.0	6SN7GT
183	Boy Scout Receiver	See article.	X	8.0	3A4
184	One Tube Emergency Receiver	Subminiature tube	X	8.0	1S5
185	Boy Scout Radio Merit Badge Receiver	Is there still a Radio merit badge?	x	8.0	3A4
186	Prayudi's 12AF6 / LM386 Radio built in Indonesia	First one on page. Uses LM386 audio circuit	X	9.0	12AF6
187	Six Volts Works this Blackout Set	Fits in a lunch box, it appears	X	9.0	6G6-G (2)
188	"Printed" Radio Circuits	Interesting, probably the first, printed circuit for hobbyists (1940's). Note small version in picture.	X	10.0	CK505-AX (2)
189	Audionempf舅ger	German, 1930's AM receiver	X	10.0	[-]
190	Two-Tube "Mini-Pal" AM Receiver	Fits in a small file box.	X	10.0	3S4
191	Das Dampfradio mit der ECC86	Six volts on the plate.	X	10.0	ECC86
192	Single tube radio that runs on flashlight cells	Another Popular Science-type article	X	10.0	1S4
193	Radio-RIM - Bausatz "Piccolo 49" - ein Batterie-Einrren-Einkreisempf舅ger	In German. Small, battery-powered radio.	X	10.0	P700 (2)
194	Audion mit verbesserter Klangqualit舩	In German. High quality audio in AM receiver.	X	10.0	EABC80
195	12AF6 broadcast band radio	Dave Schmarder. Highly recommended site.	X	11.0	12AF6
196	1929 two-tube AM receiver	Nice use of original parts	X	11.0	30 (2)
197	Batterie-Empf舅ger mit der Rre 3 B 7	Battery-Powered AM Receiver with 3B7 tube. This thing is SMALL.	X	11.0	3B7
198	Einfach aufzubauender 4-Rren-Empf舅ger mit 2 HF-Vorstufen	In German. Looks like something out of Flash Gordon.	X	12.0	Various
199	AM Receiver (German)	Translated from German; 2nd project on page	X	12.0	EF86, EL95
200	Einkreis-Empf舅ger mit der ECC 86	In German. Pencil-size, miniature tubes.	X	12.0	ECC86 (2)
201	Hi-Fi AM Tuner	Popular Science, 1958	x	13.0	6SK7
202	Picture Radio	In German. Simple AM Receiver.	X	13.0	ECC85
203	Batterie-Einkreisempf舅ger f�r's Wochenende	In German. Weekend Battery Radio.	X	13.0	DF91, DAF91
204	0-V-0 with EF97 Audio	Translated from German; 4th project on page	X	14.0	EF97
205	2 Valve Set: "Little Jim's Mate" Plus Audio Section	What is "Little Jim's Mate"? An Australian classic?	x	14.0	1J6G,1L5G
206	12SN7 single sphere radio	Translated from the Japanese.	X	15.0	12SN7
207	Four tube radios for beginners	Change "feb1" to "feb2" to see second page	X	15.0	70L7GT
208	The Evolution of the Browning-Drake Receiver	Reproduced from the April 1927 issue of Radio News	x	15.0	201A
209	Dreirren-Audion f�r ca. 300 - 1600 m Wellenl舅ge	In German. Lots of discussions about the coils.	X	15.0	RE084 (3)
210	Like original work three radio	Translated from the Japanese.	X	15.0	6C6,6ZP1
211	One Tube RF1 "1V0" Radio	Different tubes were tried.	X	15.0	6AU6
212	Radiomann-Umbau mit PCL86	"Radiomann Built from PCL86	x	15.0	PCL86
213	DOERLE 2-TUBE RADIO	Classic design from 1937 Hammarlund Shortwave Manual	X	15.0	30 (2)
214	Radiomann umsockeln: Die EF95	Great tube socket idea at the bottom of the page.	x	15.0	EF95
215	Battery receiver with ECC85 and EL95	In German. No schematic, but interesting contruction approach.	X	16.0	ECC85, EL95
216	Kofferradio mit Batterie-Rren	"Radio with Battery-based Tubes"	X	16.0	DF96, DL96
217	Globe radio.	In German. Not sure how to classify this one. Novelty seems too strong.	X	16.0	ECC85, EC92
218	RX with picture antenna with ECL82	In Italian. Uses triode/pentode (the ECL82)	X	17.0	ECL82
219	One-Tube AM Receiver	Translated from the Japanese	X	18.0	12AU7
220	Average Three Radio	Translated from the Japanese	X	18.0	77,41
221	3 Rren Empf舅ger	In German. 3-Tube Recevier. Beautiful! Worth a look.	X	18.0	RE084 (2), RE134
222	GEC A.C. Mains 4	An AM Receiver	x	18.0	6AU6 (?) (3)
223	3-Tube Common Receiver	These tubes have common replacements. Translated from the Japanese	X	19.0	UZ6C6,6ZP1
224	The De Forest D-12 Radiophone	I'm glad someone invented symbolic schematics	x	19.0	D-12 (4)
225	Beacon Simplidyne (AM Receiver)	5 tubes. "A triumph of coil design"!	X	19.0	A409 (4), A415 (1)
226	American Junkbox Receiver	In German. What it says.	X	19.0	12AT7, 35CW
227	Rowley Two: 2G22 2E32 2E42 2E36: A.Rowley	See also file "circuit.jpg". From www.vintageradio.me.uk	x	20.0	2G22,2E32,2E42,2E36
228	Two Tube Super Battery Set For Vacations	More Popular Science. Nice tableaux of boy scout and dad.	X	22.0	1R5, 1U5
229	Am Receiver with Active Antenna	Translated from German; 3rd project on page	X	23.0	ECC40, ECL80
230	Adler Portable: M.Adler	See also file "circuit.jpg". From www.vintageradio.me.uk	x	23.0	1R5,1T4,1G5
231	Multi-Radio Radio	Mr. Schmarder enters his Baroque period	X	24.0	1625 (2)
232	Fahrrad - Super	In German. Bicycle-based AM Receiver	X	24.0	P700 (4)
233	Submini: 2G21 2G31: W.A.Kumm	See also file "circuit.jpg". From www.vintageradio.me.uk	x	25.0	2G21,2G31,CK505 (3)
234	Meissner 10-1106 Broadcast TRF receiver kit	Kit radio introduced with an article in the June 1937 issue of Radio-Craft magazine	X	25.0	6K7(2), 6J7, 6F6
235	Supermidget: 1R5 1T4 3S4: T.A.Blanchard	See also file "circuit.jpg". From www.vintageradio.me.uk	x	25.0	1R5,1T4,3S4
236	Carolina 96	I can't tell if this was a real porduct in the 1940's, or a retro-projection. Anyone know Italian?	X	25.0	6SK7, 6SQ7, 6V6
237	Mini Four Midget Portable: DK91 DF91 DAF91 DL92	See also file "circuit.jpg". From www.vintageradio.me.uk	x	25.0	DK91,DF91,DAF91,DL92
238	UKW-Pendelempf舅ger	In German. I can't tell if this is a converter or just a tuner/preamplifier. Ideas?	X	26.0	EF41, EF42
239	Ein einfacher Audion wie 1928/30	In German. Very interesting coil arrangement	X	27.0	AF7, AL7
240	4-tube receiver	Dave Schmarder. Highly recommended site.	X	28.0	1T4 (2), 1S5, 3S4
241	Attachecase Portable: 1R5 1T4 1S5 3S4: F.C.Warren	See also file "circuit.jpg". From www.vintageradio.me.uk	x	28.0	1R5,1T4 1S5 3S4
242	Miniset: DK96 DF96 DAF96 DL96: S.E.Addis	See also file "circuit.jpg". From www.vintageradio.me.uk	x	30.0	DK96,DF96,DAF96,DL96
243	Garnerbike: 1R5 1U4 1U5 3V4: L.E.Garner	See also file "circuit.jpg". From www.vintageradio.me.uk	x	30.0	1R5,1U4,1U5,3V4
244	A 12FR8 Pocket Tube Radio	In Japanese. Pretty wild tube (diode/triode/pentode)	X	33.0	13FR8
245	Rowley one: 1R5 1U4 1S5 1S4: A.Rowley1	See also file "circuit.jpg". From www.vintageradio.me.uk	x	35.0	1R5,1U4,1S5,1S4
246	4-Rren-Empf舅ger mit der RV 12 P 2000.	Quite elaborate. From 1947. In German.	X	38.0	P2000 (4)
247	Repanco Hi gain SH4 (Courtesy of Ron Bryan) 6V6 6Q7 6K7 6K8	No article with this one.	x	40.0	6K8,6K7,6Q7,6V6
248	Compact 4+1: ECH42 Z77 DH77: D.H.Nash	See also file "circuit.jpg". From www.vintageradio.me.uk	x	40.0	ECH42,Z77,DH77
249	Rrenradio nach historischem Vorbild	Tube radio with nostaligic interest.	X	48.0	ECH81, EF86, EL84
250	Build your own AM Tuner	Hi-Fi Tuner and Amplifier; From 1950.	X	52.0	6SK7, 6AS7, 6K7, 6C5, 6J5, 6146, 5Y3