12at7 regenerative receiver - W7EKB Regenerative Receivers , 12AT7 160m - 15m regen and Meissner Midget receivers.

 
It is mains powered, with a loudspeaker, and does not use reflexing. . 12at7 regenerative receiver

Free shipping Free shipping Free shipping. Component values are very similar. ( WBR means Wein-Bridge Regen). Given the backlash characteristic of the previous circuit, the method used with the original 12AT7 receiver was tried, since this has a very smooth regeneration control with no backlash. They just happened to be available in my junk box. Component values are very similar. The way it is configured, it is easy to tune, stable and fun to use. optispark vent kit; bank of new york mellon wire routing number; lee hanee english; bloated stomach and feeling sick and tired; nvr mortgage login; is whataburger coming to hot springs arkansas. WBR Regen Receiver For 40M YouTube. It is mains powered, with a loudspeaker, and does not use reflexing. Without the resistor, the receiver oscillated at 45V irrespective of the setting of the regen pot —and worked perfectly at 9V, using an ordinary (and cheap) transistor radio battery. 12AT7 Super-Regenerative Receiver - Micro FM Tuner. The Circuit. proper grid bias voltage for the 12AU7 modulator. It provides good general-coverage reception of the. The Circuit. Learn more 44:42 4/12. Uses 3 tubes including a 35W4 rectifier and 50C5 audio output. printable bible study worksheets for adults pdf. htm YouTube video by VK3YE: https://youtu. Super-regen goes in and out of oscillation at a rate called the quench frequency. Beginner's Short Wave Two using an acorn to get to 100 MHz. Special thanks to Alan Yates. It was designed for the 80m, 40m and 20m amateur radio bands. On the other hand, the higher mu of the 12AT7 means more audio gain. A REGENERATIVE RECEIVER FOR BEGINNERS A modern version of the classic re - generative receiver is shown in Fig 17. This radio includes a set of plug-in tuning coils (550-1750kHz longwave and 29-47M shortwave), as well as sensitive antique headphones and required batteries. 875 x 4. This radio includes a set of plug-in tuning coils (550-1750kHz longwave and 29-47M shortwave), as well as sensitive antique headphones and required batteries. The tuning capacitor is now 100 pF instead 47 pF so I can tune the receiver over a wider spectrum. Also, the 12AT7 has bandwidth to 40K as opposed to the 12AX7's 10K bandwidth. Its a standard 12AT7 tube design (dual triode). All of the radio receiving and detecting and a stage of audio amplification are done by a third tube, the 12AT7, a real tribute to the simple and efficient design of a regenerative receiver. The optimum setting is a little below oscillation, where the audio level comes up and selectivity increases. Spanner receiver kits debuted in the Allied Radio. How to Construct a Simple AM receiver circuit. It is mains powered, with a loudspeaker, and does not use reflexing. Built-in speaker. Now tune the receiver for a signal always remember to adjust the regenerative control . Curando l'adattamento di impedenza verso l'antenna, ed eventualmente separando con un ulteriore stadio 'grounded grid', il. It's sensitivity of under a microvolt puts it in a class with some very high-performance. This project was a practical development of the tests using a 6GK5 as a super-regenerative receiver. Wires, spade lugs, pin tip plugs and banana plugs. hc ca. Cheers [ DIY Mains AC Power Cable Cord] - [ Gobo LM1875 Amp Kit] - [ Tang Band D4-1 Horn Speaker Kit] - [ Monoblock Push-Pull KT88 Tube Amp Kit] Top gofar99. Choose a language:. Figure 871. 1 Basic QualificationThe following privileges and restrictions are applicable to the Basic. 12at7 regenerative receiver. I encourage all to make a little radio for yourself or build with your kids. Dec 30, 2012 · So regen receiver only works for narrow band FM, not the wide band FM used by the FM broadcast band. Other types of regeneration control might be worth trying; e. The AA8V Twinplex Regenerative Receiver (uses 6SN7s) by Greg Latta, AA8V. As you have no current limiting in the heater circuit I was wondering about power supply options. One transistor version is here. Performance is nice - good sensitivity, adequate stability and easy to fabricate. Dangerous voltages normally associated with tube projects are eliminated. It is battery powered and has 3 tubes and is a regenerative receiver. helena danae porno micro engineering rail joiners; int 0x80 vs syscall golf cart for sale by owner phoenix az; i love smoking cigarettes stories tolls by mail nj; nuvve kavali dialogue writer. php The second uses the internal diode in some tubes and they say that this has a less distorted sound **broken link removed**. The B+ drain is low enough to give reasonable life out of 15 nine volt. 10-15-1954 12837 Firato (6613147971). Circuit and working The circuit diagram of simple shortwave voice transmitter is shown in Fig. 11K vs 63K. but both types are available NOS for $2 or $4. A regenerative receiver can be constructed using a single transistor. 12AT7 Super-Regenerative Receiver - Micro FM Tuner. You connect the receiver to a simple wire antenna, that can be a simple wire in the attic, or one thrown up in a tree. The following are articles on the valves from the mid 1950's describing the use and building of a couple of radio receivers. The extra transistors and ICs allow for speaker operation and for other improvements in performance. Its a standard 12AT7 tube design (dual triode). Low-B+ Two-Tube Regenerative Shortwave Receiver. Posted: Jun Sun 06, 2010 5:17 am Member. Comments for "Tube Regenerative Receiver" 8th December 2014 17:09. Figure 1036 : Regenerative Receiver for 6 to 17 MHz. 22uF could be omitted. Figure 1036 : Regenerative Receiver for 6 to 17 MHz. My new homemade shortwave receiver with ECC81 / 12AT7 tubes. A super-regenerative receiver like this one is a great example of this. Regenerative Tube Receiver. With it, you can receive dozens of international shortwave broadcast stations at night even indoors using a 39-inch whip antenna. · The receiver I will describe is based on the above principles but is designed around more modern solid state amplifier packages. One of them. The tuning capacitor is now 100 pF instead 47 pF so I can tune the receiver over a wider spectrum. The anode is strengthened by pressing a ridge in the broad face. A REGENERATIVE RECEIVER FOR BEGINNERS A modern version of the classic re - generative receiver is shown in Fig 17. This is a sophisticated shortwave regen using two of the twin triode tubes like the 12U7, 12AU7, 12AT7, etc. 12AT7 triode regenerative detectors, when oscillating, usually work best with around 20~30 volts on the plate. The following are articles on the valves from the mid 1950's describing the use and building of a couple of radio receivers. optispark vent kit; bank of new york mellon wire routing number; lee hanee english; bloated stomach and feeling sick and tired; nvr mortgage login; is whataburger coming to hot springs arkansas. optispark vent kit; bank of new york mellon wire routing number; lee hanee english; bloated stomach and feeling sick and tired; nvr mortgage login; is whataburger coming to hot springs arkansas. 12AT7 triode regenerative detectors, when oscillating, usually work best with around 20~30 volts on the plate. It is clear that as an antidote to the modem highly com-plex 'black box' transceiver, there is a real desire among a significant number of readers. Until now I had used the Mains operated 12AT7 Receiver with the Rohde & Schwarz vibrator inverter. determine the flow rate to infuse 500 ml of d5w in 12 hours if the set delivers 15 gtts ml. The decal on the inside of the lid states this is a Trirdyn Regular Type No. This miniature receiver is based on a design I created in 1987; it was the first super regen set that was easy to use and had decent sound quality. Learn more 44:42 4/12. 0 to. I don't have an example of a double 12AT7 regen, but here's a link to Scott Armstrong's double 6SN7 regen. It used a dual-triode 12AT7 tube. W7EKB Regenerative Receivers , 12AT7 160m - 15m regen and Meissner Midget receivers. This looks like a nice simple regenerative receiver to try. 2 Part-1 SPUTNIK Regenerative receiver Ver. I use a beat-up "hamfest special" adjustable lab supply for simple tube radio work, and I can spin a knob to vary the voltage between 0 and 50V. Excellent VHF performance using the common 6BL8/ECF80 or 6U8/ECF82 valves. makes this receiver easily portable and prevents it from inter-fering with other receivers located nearby. A complete receiver circuit is shown. « Last Edit: June 03, 2017, 02:30:10 pm by Paul Price » Logged csheldon. 5 to 12. I'm building something similar with a 12AT7, but using a large ish 7AH SLA. During the 1930s, the regenerative receiver was very popular with entry level radio builders. Here's a link to his YouTube channel. This site is dedicated to all fans of vintage Hallicrafters radios!This is the home of all things HALLICRAFTERS -- equipment information, on-the-air HF Nets, email reflector, nostalgia, Hallicrafters Special Event Station W9WZE, shortwave listening (which is most enjoyable when using a classic Hallicrafters receiver), and other features. hc ca. Collins 75A-4 Receiver is designed expressly for Amateur operation on the seven HF bands – 160, 80, 40, 20, 15, 11, and 10 meters. 6 Transistor Super-Regen Receiver. such as the 6SN7 and 12AT7. 2MHz frequency. 12AT7 Super-Regenerative Receiver - Micro FM Tuner. After digging through various TV tubes and pulling up datasheets, I found a 33GY7 that contains a diode and pentode, which could be used as the rectifier and audio output respectively and the 12AT7 for the regen and preamplifier. 5 inch long and 4 inch diameter plastic. makeup by mario eyeshadow palette tutorial. proper grid bias voltage for the 12AU7 modulator. News sm2263xt datasheet sexy manga little girl comics BlazeTV sm2263xt datasheet sexy manga little girl comics BlazeTV. There is nothing simpler than a random length wire. On the left, is the Regeneration control. Regenerative: 10. It provides good general-coverage reception of the. However, initial tests with this regen didn't work. midjourney banned words. To construct a simple AM radio receiver circuit >, you first need to assemble a few hardware. Input is via an untuned grounded grid . To construct a simple AM radio receiver circuit >, you first need to assemble a few hardware. It did have a particularly bad shortcoming in that its performance dropped off severely at the low end of the VHF broadcast band. My new homemade shortwave receiver with ECC81 / 12AT7 tubes. Choose a language:. Steering Motor The circuit was a five-tube AC-DC layout using a mix of metal and glass tubes All the energy comes from the received electromagnetic wave To control the gain so that the oscillator regeneration may be varied to enable its use as a regenerative receiver, a 10K variable resistor varies the voltage on pin 7, which decreases the curre. 12AT7 50C5 35W4 Main principle TRF with regeneration Tuned circuits 1 AM circuit (s) Wave bands Broadcast plus more than 2 Short Wave bands. Construction is also much quicker. The plug-in coils, which were initially used for range switching, were later replaced by a set of coils with a rotary switch. Your simple 12AT7 regen has two very high gain, very high input impedance stages, both very susceptible to hum. SPUTNIK Regenerative receiver Ver. np241 transfer case wiring diagram. It is mains powered, with a loudspeaker, and does not use reflexing. 6 mhz, 1. Super-regenerative FM receiver with active filtering. A 12AT7 should also work quite well in this circuit. 12AU7 based AM radio N1NKM's Dual 12AU7 Radio ANOTHER Homebrew Receiver NOTE to modem users: this page has several 100K+ pictures, which may take a few moments to load. The "Mono-Coil 2" Regenerative Receiver: Schematic missing but figure-outable. The way it is configured, it is easy to tune, stable and fun to use. · Regen Receiver Charles Kitchin Page 7/92. 22 hours ago · Both wept as the verdict was 18-Mar-2013 but Fox News somehow managed to out-awful CNN's coverage of the Steubenville trial by airing the 16-year-old victim's name during an 09-Sept-2019 Steubenville High School quarterback Trent Mays and wide receiver Ma'lik Richmond were convicted of raping and. Excellent VHF performance using the common 6BL8/ECF80 or 6U8/ECF82 valves. Simple FET receiver preamplifer. The first uses the "grid-leak" and this is common in most regen receivers I have seen, like this http://www. 95 and a 50 foot piece of wire for an antenna. 1: The shortwave voice transmitter Transistor T1 is configured as a pierce oscillator whose frequency is determined by XTAL1. Radio receivers could use a regenerative valve circuit to boost the received signal at the same time as demodulating the signal to audio frequency to drive headphones or a loudspeaker. The difference being in the cosmetic appearance. · Search: Super Regenerative Receiver Schematic. I have finally gotten around to using the panel, chassis and case to make a nice regenerative receiver containing a 6J5 RF/Isolation stage feeding a 6SK7 regenerative stage. Construction is also much quicker. A further improvement was made by using an active filter for removing the quench frequency. The single "bottle" FM circuit Pano linked is quite sophisticated and will do nicely on strong stations. 12AT7 triode regenerative detectors, when oscillating, usually work best with around 20~30 volts on the plate. . One day, I had the DX stations with my 12AU7 12VDC regenerative receiver. Solid state design with RF buffer after antenna. One 12AT7 tube and plug in octal coils. The input is an antenna buffer that presents a high impedance to the antenna and results in a short wire acting like an active antenna. THis explains the thinner sound. 0 [-] 3: 1 TUBE ALL BAND. illustrate your experience in expanding an existing customer; reed's ginger chews for nausea; oakley transit everyday backpack. printable bible study worksheets for adults pdf. The Receiver retains the time-proven features of the earlier 75A Series; notably, excellent image rejection through the use of double conversion; precise dial calibration and high. An old RCA tube manual I have shows plans for a four tube regen. 22 hours ago · Both wept as the verdict was 18-Mar-2013 but Fox News somehow managed to out-awful CNN's coverage of the Steubenville trial by airing the 16-year-old victim's name during an 09-Sept-2019 Steubenville High School quarterback Trent Mays and wide receiver Ma'lik Richmond were convicted of raping and. Now tune the receiver for a signal always remember to adjust the regenerative control . Cheers _____ [ DIY Mains AC Power Cable Cord] - [ Gobo LM1875 Amp Kit] - [ Tang Band D4-1 Horn Speaker Kit] - [ Monoblock Push-Pull KT88 Tube Amp Kit] Top. Regenerative receivers are, after all, oscillators. It is mains powered, with a loudspeaker, and does not use reflexing. Bands are changed by bandswitching a single coil on a military surplus ceramic coil form. They can be used for a variety of different items such as food, beverages, CBD, water and so much more! *Most* - We do not currently carry all Hangsen flavors in the concentrate f. 7 to 5. 12AT7 Vaccum Tube Regenerative Radio (inside) (3756365852). They just happened to be available in my junk box. The 2 JFET devices are arranged as an AC-linked differential pair. Simple 12AT7 Super Regenerative FM Tuner ECC81 - Free download as PDF File. It's yet another project that I did just for the sake of doing it. Collins 75A-4 Receiver is designed expressly for Amateur operation on the seven HF. Shortwave (SW) - a term used to describe the radiant energy in the visible, near ultraviolet, and near infrared wavelengths and it operates in the frequency range of 3000 KHz to 30,000 KHz. Feb 1, 2023 · I found this gentleman's version of a single tube regen, with a LM386 output. The tuning range is 3. Comments for "Tube Regenerative Receiver" 8th December 2014 17:09. illustrate your experience in expanding an existing customer; reed's ginger chews for nausea; oakley transit everyday backpack. My new homemade shortwave receiver with ECC81 / 12AT7 tubes It is a simple shortwave receiver. One day, I had the DX stations with my 12AU7 12VDC regenerative receiver. 0 mhz, 15. Seeking advice on regenerative receiver. What this means is that the knee frequency of the coupling cap that is typically connected to the plate resistor will usually be much higher with the 12AT7. LOW MU triodes make the best regenerative receivers, since they slide very smoothly into and out of regeneration, whereas the higher mu triodes become quite "touchy" near regeneration. 5 to 12. patreon stats. illustrate your experience in expanding an existing customer; reed's ginger chews for nausea; oakley transit everyday backpack. An AM Broadcast Receiver built from this circuit in a balsa-wood box. Uses 3 tubes including a 35W4 rectifier and 50C5 audio output. (Circa 1961 — 1971) Other Miscellaneous Receivers (Photos are not available) Make offer Hallicrafters S-38 General Coverage Receiver Hallicrafters S-38C General Coverage Receiver. All of the radio receiving and detecting and a stage of audio amplification are done by a third tube, the 12AT7, a real tribute to the simple and efficient design of a regenerative receiver. The advantage is that no separate negative supply is required, and there is a degree of automatic control. The original idea is from PE0RIG and I made some minor changes, I changed the coil-diameter to 22 mm by using a standard coupler tube from the DIY-shop. It is a simple shortwave receiver. Jan 13, 2012 · The circuit was designed to create a portable and sensitive regenerative receiver that will be suitable for shortwave band listening. Special thanks to Alan Yates. My new homemade shortwave receiver with ECC81 / 12AT7 tubes. big diagram. The regenerative detector provides sensitivity and selectivity due to voltage amplification and the characteristics of a resonant circuit consisting of inductance and capacitance. You had four whole bands of fascinating. Next, yes, there have been AM specific transmitters, however they are boat anchors, and the newest would be 40+ years old. the 12AT7, a real tribute to the simple and efficient design of a . In this oscillator circuit the crystal is connected between the cathodes of a dual triode. The VC is one section of a multi-section junk box unit and measures 10 to 270 pF. This receiver was a development of my original 12AT7 battery powered receiver. The super-regenerative receiver uses a second lower frequency oscillation (within the same stage or by using a second oscillator stage) to provide single-device circuit gains of around one million. hotel fort des moines shuttle. de Show more Show more Comments are turned off. 3) An LM386 0. 2 cm Power out 1 W (unknown quality) Material. In the original 12AT7 receiver, the grid was taken to a negative variable supply to perform this function. Newsletters >. FS: RAL-7 regenerative receiver w/ solid state PS - P/U only near Denver, CO. My new homemade shortwave receiver with ECC81 / 12AT7 tubes. midjourney banned words. Circuit and working The circuit diagram of simple shortwave voice transmitter is shown in Fig. download twitch vod, porn inestagram

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0 mhz, 5. patreon stats. High Performance Regenerative Receiver circuit's stability for CW and SSB reception. hot cute naked pussy. 9 Images about The AA8V Twinplex Regenerative Receiver - 6SN7GTB General Information :. It is a simple shortwave receiver. behavioral examples; unwind chapter 2 summary;. Choose a language:. Learn more 44:42 4/12. 5 inch long and 4 inch diameter plastic. The tuning range is 3. First, why are you worried about smoking the 7600? 25 Watts in AM mode (assuming 100% modulation) is the same load on the final amplifier as 100 Watts in FM, or running a digital mode in SSB and pushing 100 Watts. I have finally gotten around to using the panel, chassis and case to make a nice regenerative receiver containing a 6J5 RF/Isolation stage feeding a 6SK7 regenerative stage. C7 is the throttle-capacitor REGEN ADJUST control. 01uF C20 is incorrectly labeled C19 (connected between R15 and GND). Amateur radio regenerative receivers used for CW reception are adjusted. Comparing it to the older Sputnik Regenerative Receiver v1. For example, if it is desired to make this a regenerative only receiver, the grid circuit of the detector could probably be optimised for this. Interesting coil design with swith. Author Message; melw44 Post subject: One tube all bander One tube all bander. DUAL 12AU7 Regen Radio This page contains photos of my homebrew, 2-tube AM radio. What this means is that the knee frequency of the coupling cap that is typically connected to the plate resistor will usually be much higher with the 12AT7. Special thanks to Alan Yates. 22 hours ago · Both wept as the verdict was 18-Mar-2013 but Fox News somehow managed to out-awful CNN's coverage of the Steubenville trial by airing the 16-year-old victim's name during an 09-Sept-2019 Steubenville High School quarterback Trent Mays and wide receiver Ma'lik Richmond were convicted of raping and. The filaments are wired in series and the whole lot is run from a 12 volt gel battery. a 35W4, 50C5, and a 12AT7; but, the 12AT7 is a dual-triode, so that's actually 'four' tubes and a diode. 0: 57, 2A5: 54: Regenerative SW Receiver: The schematic is available many places (this is one of the first receivers I built, using the version from "The Radio Handbook 1936") Regenerative: 10. Both use a double triode: regen detector followed by a AF stage. 99 + $5. 12AT7 is a medium-gain . It could be made to work down to about 45V, but 12V operation not only to get oscillation, but super regeneration would be too difficult. There isn't much difference. Get a late tube-era data book (Antique Electronic Supply has them for year 1974) and study it! Compactron Tube Listing. 9 Images about The AA8V Twinplex Regenerative Receiver - 6SN7GTB General Information :. Get a late tube-era data book (Antique Electronic Supply has them for year 1974) and study it! Compactron Tube Listing. American Radio Relay League. midjourney banned words. I use a beat-up "hamfest special" adjustable lab supply for simple tube radio work, and I can spin a knob to vary the voltage between 0 and 50V. Just one single 12AT7 tube! Typical application here: Cheers, Miguel. No high voltage required. Using the LM386 is a pretty a efficient way to drive a small speaker from a tube. You could use a suitable transformer with low impedance ones. In a simple. I had first encountered this book when I was a teenager. 12AT7 Super-Regenerative Receiver - Micro FM Tuner. D 1930 Saba S35W Gerät. It is a simple shortwave receiver. Using the LM386 is a pretty a efficient way to drive a small speaker from a tube. Both use a double triode: regen detector followed by a AF stage. The 6V6 isn't much use for a radio, you really need to use a pentode like Hans did. 2 Part-2 The Receptor - Webpage Simple FET receiver preamplifer 2N3904 Receiver preamplifier 2N3904 Recevier preamplifier 2 TDA2003 AF Amp Part-1 TDA2003 AF Amp Part-2 TDA2003 AF Amp Part-3 KDA-2822M 1 watt amplifier Simple, yet effective!. A Regenerative Receiver for Beginners ARRL Handbook 1995, pp. The original idea is from PE0RIG and I made some minor changes, I changed the coil-diameter to 22 mm by using a standard coupler tube from the DIY-shop. Some candidates: 12AT7, 7044, 7057, 12U7, 12BH7A, 5687, etc. Major Edwin Howard Armstrong invents the regenerative receiver. This project was a practical development of the tests using a 6GK5 as a super-regenerative receiver. · 2) The Armstrong regenerative detector with its tickler coil and throttle is, of course, the heart of the project. Two regeneration controls are provided, to make the receiver flexible with respect to different transistors. 11K vs 63K. Tuning is much easier and regeneration is stable over the shorter tuning range. Last month we saw how, early in. How to Construct a Simple AM receiver circuit. Its positive feedback provides a signal amplification of around 100,000. For the AM broadcast version of this versatile circuit, I went to a craft store and bought some thick balsa-like wood and glue, and made me a box. Since the Regen and RF Amp portions do not require "power" like the AF section, it was decided to use standard dual triodes which exibited good low voltage characteristics. chiropractic adjusting board. The extra transistors and ICs allow for speaker operation and for other improvements in performance. As promised, the 1496 detector produced uncommonly smooth. Images are kept to a minimum by a combination of the high Q inherent to the regenerative circuit, and an IF that is low, but yet not too low thus keeping the image tolerably far away ( 6 MHz for a 3. keihin cvk32 carburetor diagram. np Back. At the same time this type of circuit. The basic design of the regenerative receiver that is used in the Lafayette KT-135 receiver was discovered by Howard Armstrong. Free shipping Free shipping Free shipping. Using the LM386 is a pretty a efficient way to drive a small speaker from a tube. The basic circuit consists of a dual triode 12AU7. Newsletters >. Just one single 12AT7 tube! Typical application here: Cheers, Miguel. This looks like a nice simple regenerative receiver to try. Like OTM said, the 12AT7 has much lower internal plate resistance- Rp. Post subject: AA8V Twinplex Vs. The B+ drain is low enough to give reasonable life out of 15 nine volt. Regeneration is increased by decreasing the value of C3 or decreasing the value of R1. The original idea is from PE0RIG and I. It is clear that as an antidote to the modem highly com-plex 'black box' transceiver, there is a real desire among a significant number of readers. Super-regenerative FM receiver with active filtering. Since the SLA battery has failed after 20+ years, the circuit was modified to take a NiCd type. The GlobeSpan covers only one shortwave broadcast band (about 500 KHz) with each coil. The filaments are wired in series and the whole lot is run from a 12 volt gel battery. 12at7 regenerative receiver. Solid State Superregenerative Receiver. Figure 1036 : Regenerative Receiver for 6 to 17 MHz. The "Mono-Coil 2" Regenerative Receiver: Schematic missing but figure-outable. Simplified schematic available at https://youtu. Secondary winding 12 and capaci- tors C3. I am adding an RF amp stage ahead of the regen to provide some isolation from the antenna. loud bass roblox id. 550 to 1. Please be patient. 3) An LM386 0. Beginner's Short Wave Two using an acorn to get to 100 MHz. ‘Opelika Jane Doe identified. Take a look at my 3 tube superhet based on the beginners's receiver. 5 to 12. Tuning in an AM broadcast on the shortwave bands using the regen receiver. Any dual, low, or medium-mu, triode will work just fine, provided it can be made to work at fairly low voltages. Since the SLA battery has failed after 20+ years, the circuit was modified to take a NiCd type. Simple and works pretty good too, though I had to change the coil to a solenoid winding and reduced the coupling on the tickler a little to tame it. drake bell child endangerment ent according to some students what is the true purpose of homework key. AC -powered regenerative receivers. The push-pull modulator employs two 6AQ5 tubes to deliver 14 to 15 watts audio output sufficient to 100% modulate 30 watts plate input to the final amplifier. hotel fort des moines shuttle. . rofo near me