811a vs 300b

811a vs 300b. I installed them in my Ameritron AL-811H amp and burned them in for about 15 hours. > If the AL-811A plate voltage runs that high it is exceeding the. Check latest price below (Affiliate links)RLC-811A Much faster. When the grid voltage peek steps over to positive region, grid current (which is before in uA magnitude) started to flow (mA, even tens mA magnitude), IF driver capable serving it. To better learn the working principle and settings of the camera, here are some instructions for your reference. I hooked up an 811a on the bench with the following circuit: I reused my original D3a driver from the 300B SE Amplifier. 6. Jun 2, 2023 · VINTAGE MADE IN USA 4 PIN CERAMIC TUBE SOCKET 811A 2A3 300B 5Z3 572B. On December 18th, 2017 Surefire announced the release of the XH35. So even though the 1212A looks like less area, it's just the aspect Nov 12, 2023 · 70 x 70 x 164mm; 470g. 8mm lens -- wider angle than the standard 810A or the B800, and in f=6. View All Close. Also you could watch LifeHackster YouTube channel who reviews lots of Aug 2, 2023 · Chula Vista, CA. From the table, we can see that the Reolink RLC-811A is a more advanced security camera compared to the Reolink RLC-810A. 60 89%. *The data on the pages above are obtained under specific test conditions. 另外 E180CC / 7062 / 5965 ,是優質耐用管,u值比 Size : 450×500x290mm. Mar 11, 2007 · Power is 9W ; about as much as a well designed 300B amp. Lots of folks like the 300B's euphony, but it (IMO) generates excessive 2nd order harmonic distortion. 0 x 2. The 300B is a "showman". This is the LAST of the US made 811A. Feb 18, 2017 · Regarding 2a3 vs. In my SET amp I've used a couple of pairs of nos 2A3s and a pair of new 2. Actual use may vary. PSVane 811a Tubes. I turned them off trying the built in lights of the 811A and E1 OD. Psvane UK-6SN7 Hi-Fi vacuum tube, matched PAIR factory matched pair, gold plated pin replaces: 6SN7GT; 6SN7WGTA/B, 6H8C, CV181, CV-181 height without pins ca. the Marauder. I don't need to push the 811A as 8-10W would be sufficient if it comes close to the 45. In this video we test and compare two of Reolink's 4K POE Bullet IP Cameras, the RLC-810A and the RLC-811A. Jan 4, 2014 · Wooaudio Fans. Thus snake. Oct 27, 2021 · Compare it to Full HD footage from some of the big names, such as the Nest Cam 2021, and there’s really no competition – the Reolink RLC-811A is much better. You get remote monitoring through the app, with motion alerts and scheduled recording. Are the specs on Reolink's site even correct? The website says the B800 (my old cameras), 810A (my new cameras), and 811A (candidate for front entry) are all 192mm long and 60mm high, but that seems to be a load of rubbish. Quick view. Shuguang’s Treasure 300B-Z is beautifully made, with its svelte profile and smoked-glass body contrasting a white ceramic base. Qty: Information Mar 30, 2022 · Today, we will compare Reolink's 12MP IP PoE NVR Camera the RLC-1212A to the RLC-811A which is an 8MP 4K Quality and also to their entry level RLC-820A 4K IP The 1212A is 93 horizontal 49 vertical. To my ears, 300B based amps tend to be "finesse" amps. With 60 watts of drive power, output is 720 watts. 4. My flood lights provide longer view obviously with about 5,000 lumens. Also an excellent tube, though it is quite pricey in comparison to the others here. Center: RLC-811A. 9A versus 1. Jul 31, 2005 · Tube costs vary wildly for both tubes. Oct 24, 2022 · The ThivanLabs Flamingo 300B, Magpie 811, and Robin DL50 are a trio of new-generation tube amps released by Thivanlabs. I didn’t have step down transformer on hand, so I need to try it elsewhere. The envelope, anode, and filament are identical to the 811 tube. Averaged over any audio frequency cycle of sine wave form. 9W is plenty and you can drive alot of speakers with it. Qty: Information. 3. The w8exi wingfoot vfo exciterAmplifier 811a 2m ameritron tube Tube amplifier 811 811a input 572b power resistor output cathode amplifiers tubes w8ji813 amplifier amp schematic linear diagram radio high supply. Ps. That 4K image does its job, and the footage is much sharper than on Full HD models. Suitable for use in place of 811A. The older AL811H (prior to drive resistor modification) with good tubes and stable power line, when properly tuned and operating in the linear region, has about 11 dB gain. output jack. That was an easy choice and speed up my building process. It was old, I got from eBay. Well, this fits all of those criteria, it's much smaller than the 811A, and you get the bonus 2nd telephoto lens. When it is in constant working, the anode should not be allowed to have slight red; when in interrupted working, it should only be allowed to have perceptible slight red. RLC-811A Reolink Duo 3 PoE Reolink Go PT Ultra 16MP Security Cameras Battery Cameras Dual-Lens Security Cameras PoE IP Cameras WiFi Security Cameras Security Camera Systems Video Doorbells Solution Finder. Self-Opening (SO) - RIDGID offers Optional Die Heads for your pipe threading and fabrication setup. It can also be powered up with a 12 Volts, 1 Amp, D. #1. 共 93 件商品. It uses the same T-Slot mounting system (covered later in this post) as the X300U-B and uses Surefires Masterfire Rapid Deploy Holster. To sum it up quick, there option packages depending on year of. First, I do want to point out two things: The 1212A is more of a square aspect ratio at 4096x2874, versus the 811A is more widescreen at 3840x2160. These tubs are pre-tested by RF Parts. 811D is a subsequent encounter code, includes a 7th character and should be used after the patient has completed active treatment for a condition like strain of other specified muscles fascia and tendons at wrist and hand level right hand. The grid emissions and short function are adjustable - they require a 20meg and 1meg resistor. E-Series (Flagship) WE Replica (Time Proven) Dream D-Series (Innovation) DG-Series Overhung (Value Performer) T2 Black Bottle (Affordable Upgrade) RLC-811A next to B800: Edit: Rough ruler measurements. Its does use a 0-120 quality scale rather than reading true GMhos, which seems to be a major hangup with some people. Compare. No need to single out just the 1212A. 上面幾種編號的管子,基本上都可以直接互換沒問題. 另一個代用表:此為可直接互換免用轉換座. Get 'em while they last. It now has a richer, crisper sound as a result. The calculator: Apr 16, 2020 · A2 operation -in this case of 300B- does not mean that tube working all time with positive grid voltage. These are your best best for a new Chinese 811A tube. Edit- The Taylor 811A is still the most reliable due to RF Parts tube screening. 2Vrms => 15. > > The AL-811H runs about 1600-1800 volts HV, not 1400, which is. Here is a description. 811A Power Triode Notes: 1. aliexpress. 5. 43 inches without the stand (and 9. 83 x 5. A large field of view is not always better. In November 2021 I purchased a matched set of PSVane 811a tubes directly from a supplier in China via the Aliexpress website. When two or more tubes are used precautions should be taken to balance the plate currents. 80 70%. 69. PoE Camera Question. Also, "unusable" is rather hyperbolic. 0 810A and B800 are listed with the same Angle of View. Feb 18, 2017 · And I used a 45 tube to nicely drive the UBT-2. RLK8-811B4, a 4K PoE 8CH NVR system with 4 8MP cameras and a 2TB HDD, features person/vehicle detection, 5X optical zoom, color night vision & 24/7 Mar 25, 2019 · This calculator allows you to trace the anode characteristics graph, and to compute and tune loadline and operating point of various vacuum tubes. Bottlehead Stereomour II 2A3 or Kaiju 300B, or the Elekit TU-8600S 300B amp. Similar to the 810A, the Reolink RLC-811A can perform smart motion detection for all motion, humans, cars, and pets (beta). options. S66. A 2A3 or a PX25 (similar tubes) are arguably as linear as a 300B with tighter bass and the same lush soundstage. Power Gain of AL811H Amplifier. Person/Vehicle Detection. But you don't need the 5x optical zoom, or you don't like the large size of the 811A. Online shop: https://s. There are other similar elements with the aforementioned WiFi camera, such as the bottom-mounted Feb 18, 2017 · 2017-02-18 12:34 am. 曙光胆（SG Tube）2024款长沙曙光电子管811A FU-811电子管超短波理疗胆机纺织用真空管一年换 一只测试通过. Some design tweaks in a 300B amp could do the same for that tube. Good 300B tubes seem expensive, 2A3 not nearly as spendy. io, adjustments to the amp might be required. The Sino 811A is a greatly improved version and is a cost-effective and suitable replacement for any 811A. It considers both reactive loads and resistive load. As is the case with all Thivan Labs amplifiers, the Lion 805A SE Mk2 Integrated's power source is carefully designed with 5 filter levels including large-sized chokes and oil caps. You get a maximum of 256GB of local storage, with the option to connect to a Reolink NVR system. My speakers are very high sensitivity, so 2-3 watts for the 2A3 and 8-10 watts for the 300B is not a deciding factor. ( 2003 Mercury Marauder 300a) 811A Tube History and Construction. Quality of the tubes will make a difference and it matters. Price is for a Single Tube DG-Series Overhung (Value Performer) T2 Black Bottle (Affordable Upgrade) Dec 29, 2008 · I went to my friend’s house to test my “old” Knight 600 Tube Tester. Reply. C adapter with less than 12 Watts of power. There are other similar elements with the aforementioned WiFi camera, such as the bottom-mounted Aug 10, 2023 · More output, higher transconductance, and a bigger plate structure characterize the 1212A. 300b Never forget that different output valves/tubes - even from the same group can easily have different levels of THD. Weight : 54kg (120 lbs) Hardwired Point-to-Point Circuit. If you want 2A3 linearity, along with 300B power, use an unbypassed cathode bias resistor and purchase O/P "iron" that meshes with the increased O/P impedance present. Price is for a matched pair (2 tubes) $24. other than the cent ch. 300a is often = 2003 Marauders w/ clock in dash. The #45 and 2A3 are honest. Psvane HIFI Series UK-KT88 、UK-EL34、UK-6SN7 are new-creation, never have the better cost-effective in the history of Psvane. You can't compare a PSE EL84 amp with a PSE 300B amp. 2-Year Limited Warranty. Add to cart. With directly heated Thoriated Tungsten filament, tri-plate anode and Titanium gettering, SV811-3 is one of the best directly heated triode for audio application. That will require a tube tester of a later design since the TV-7 pre-dates sweep tubes. Apr 17, 2023 · Also the camera RLC-542WA ( 5mp camera ) has 4:3 aspect ratio and same angle of view as RLC-842A ( Field of View Horizontal: 27°-96° Vertical: 21°-69°). By analyzing person and vehicle shapes on board, RLC-811A can detect humans, vehicles, and pets before sending real-time alerts. So probably need a back up pair. 00 each plus shipping. However, the 811 has the features of both, plus a much larger field of view (that alone is worth it for me), and zoom. The 811A wants to be biased around +22V with 430V on the Sep 3, 2022 · There are few 300B push-pull amps on the market delivering close to 40W, but with them you won't use most benefits of that tube. >. Unlike other vacuum tubes such as KT88 or EL34, which typically run at 450V plate voltage, high voltage power tubes such as 845, 805 and 211 run at plate voltage 900V or even higher depending on your amp design. Do not worry about exactly 'matching' the ratio of tube plate impedance, ra, to the output transformer primary impedance. Pretty close, versus a 3. In 1906, an American engineer, Lee De Forest, invented the prototype triode tube. 2. According to ICD-10-CM Guidelines a "subsequent encounter" occurs when the patient is receiving routine care for the condition during the healing or This is the 811A. 48mm For years, PSVANE has been €94. Choke and oversize (40W) output transformers are from Hammond. The power transformer is made by Nick from P* Audio. At night, the camera has IR, giving a black and white image. It is properly made and will likely outlast any Chinese 811A that is your only other choice available for sale. and map pockets in seats. 300b = is often 2004 Marauders w/out these. 曙光胆2024年新出长沙曙光电子管 No need to single out just the 1212A. Remember Part Number: PS-UK-6SN7. The 1212A will have some better resolution since it's 12mp, 811A is 8mp. I've come into possession of a 300B amp built by @THD+N. The plate ICAS dissipation rating is 60 watts and not to be confused with the Russian CCS rating of 40 watts. We cannot guarantee which is in stock. $88. Best 811A Available. Feb 28, 2021 · That being said, the RLC-811A measures 3. The last year of the pandemic allowed me to do some experiments whilst being more at home. Jan 10, 2006 · 1,246. 8Vp => 11. RLC-1212A VS RLC-811A which one is best beside siren and 5x zoom ? Need it for outdoor . BmWr75 said: I'm contemplating building either of these amps from a kit. SV811-10 is identical to SV811-3, except that the mu is higher. Continuous Commercial Service. Direct Interelectrode Capacitances. 2A3 / 300B / 811 / 572; Shuguang 811A; Shuguang 811A. Obtained preferably from a separate, well regulated Configuration - RLC-811A. Svetlana SV811-10. Left: RLC-511WA. One of the most significant differences is that the RLC-811A comes with a 5X optical zoom, while the RLC-810A does not have optical zoom. 75. 5k or 4. > > why it's not a bad idea to run the 572Bs in that amp. Sep 13, 2015 · Does anyone know why a Fisher SA-300 is 60 watts, while the 300B is 90 watts ? I can not see any diff. So lets get to the comparisons. Opening the PDF though gives you a full set of correct specs though. 00 *. Jan 1, 2002 · Here the output characteristic of the tube 845 with the specific operation point (click to enlarge) You can calculate the output power with: 600Vp / sqrt (11500ohm / 8ohm) = 600V / 38 (turn ratio) = 15. It's pure Class A2. 811A Tube. Optional Die Heads. Oct 31, 2020 · In terms of both connectivity and storage, the Reolink RLC-810A is identical to the RLC-510A. 96mm total height ca. In addition to the other video advantages already mentioned for the 810As, you can also buy the 810A cameras in f=2. It will, however test the more common ham tubes like the 6146, 807, 6L6, and 811A. $188. click. The 811A lights are brighter. Intermittent Commercial and Amateur Service. You need high efficiency speakers for 45 SE,but they produce a great sound. Note: The numbers of cameras and accessories vary among different kits/bundles. You can: set the Power Supply V+ voltage, the screen voltage, the screen tap, the quiescent bias current. The Quicksilver SET Monos (300B version) coupled with the Lowther PM2a/Medallion speakers offer all of those traits to a very high degree. The heater current used by 1212As is higher than that of 811As (0. Warranty. Mar 1, 2024 · Mar 1, 2024. The 45 sounds great to me for about 90% of my listening, just lacks a little power sometimes. 100 55%. AP1, Sep 3, 2022. 已有 人评价. cheers. There isn't an adjustment for emissions - just make sure the 47 ohm resistor is within 5%. com/e/_oFeRE6pMessage from Reolink, who sponsored the camera:Summer Sale 6 Feb 18, 2017 · Regarding 2a3 vs. Quick-Opening (QO) - Manual release for user-specified thread lengths. I find the nos 2A3s (KenRad and RCA) to be more natural sounding (which to me means less distorted). -1. The power tube is JJ 300B and the power supply is done with RCA 5U4GB full wave rectifier tube. The driver tube for the 300B amp has to modulate 120mA of current with 35pF input capacitance while the EL84 driver has to modulate 60mA into 21pF. Note 2: There are two types of glass bottles (straight and coke bottle). Refined, delicate, detailed. It's all about the mounts. We have mostly RCA 811A from the era when they had to last. 811A Single Ended Direct Coupling ออกแบบวงจรให้สามชาติมหาอำนาจร่วมมือกันทำงาน กองหน้าใช้รัสเซีย(6N2P) กองกลางใช้จีน(6P3P) ส่วนกองหลังใช้อเมริกา(RCA811A) The specs even say the 1212A's 1 spotlight is brighter than the 811A's 5. This is a GE 812 tube. Best Chinese 811A Tube. 2a3と300bはなにが違うのかな？2a3も300bも同じような形をしていて、300bのアンプはたくさん売られています。アンプキットを作っている会社では What's in the Box. Right: RLC-511. Happy experimenting, and happy listening. 其中 ECC32=CV181 特性與6SN7有些不同,不過一般來說,代用沒問題. The design was long before FT8, and never intended for AM use. Due to the high voltage in the circuit, biasing an 845 / 805 or 211 amp improperly may expose you to lethal high voltage causing Jan 26, 2016 · I give these tubes a top recommendation. The 810 and 812 are very different cameras, for very different purposes. 8k primary. I added a PMOS driver for a “plate to grid” feedback. 813 I think gives a very good all-round sound triode strapped,great bass and top end,maybe The 572B is an indirect descendent of the 811 tube. Related Products; Related Products. There is more to it but this is a short answer. May 26, 2020 · The most popular SET amplifiers use three types of triode tubes: the 45, which produces around two watts per channel; the 2A3, which produces around five watts; and the 300b, which produces around eight watts. Shuguang Treasure 300B-Z Rating 8. 811A $54. Over the last 20 years I have sampled a half dozen manufacturer's 300B variants. All specs information was taken from reolink website. Don't know how old they are or how many hours are on them. This amplifier trio includes a feature of choosing sound modes between high dynamic and standard dynamic with a switch integrated into the front of the amp. (700 vs 450 lumens). This is an amplification of about twelve times. Tube may be marked SV811-3A. Generally,845 gives good bass,but is harder to get very good treble out of,whereas the 211 is the other way round. ThivanLabs says that each model offers a distinct sonic personality. The Svetlana is the same as the Russian Ryazon G-811A tube. It greatly reduces the false alarms since less important objects are ignored. The 812 was a moderately low mu tube, primarily intended for grid driven modulator service. Reolink RLC-811A is a POE camera that has smart person and vehicle detection, siren, two-way audio, spotlight, time-lapse and smart home features. The X300UA's mount has a quick-attach / detach spring-loaded plate. Jun 30, 2023 · 300b tube single-ended class a amplifier circuit diagram under vacuum. The XH35 and the Surefire Masterfire Holster. Jan 22, 2023 · The Reolink RLC-811A is also an IP66-rated outdoor, bullet-IP camera, and primarily a PoE camera. Any help greatly appreciated! Oct 2, 2010 · Yep,definately prefer triode SE amps. 2. 811A is optical zoom 105 to 31 horizontal 55 to 17 vertical. The 812 was used in some higher power WW II AM transmitters. Cables - Audiomica Excellence series. You can get a 6. Breakage or abuse failures including melted or hot spotted anode are excluded from warranty. Mar 14, 2022 · The 811a amplifier. Note 3: Tube may be marked SV811-10A. This makes it sound like you'd recommend the 811A to OP, but really you don't recommend either. Note: You can click on the keywords below to jump to the I designed the AL811 and AL811H amplifiers as the cheapest possible amplifier for medium power amateur SSB and CW use only. 2021-08-23. frr24 (3307) 99. 37 with the stand fully extended) so, it’s essentially just as big as the RLC-511WA, minus the antennas. 2% positive; 300B tube, Vintage Tubes & Tubes Sockets, Mar 24, 2017 · They are nice sounding tubes, they appear to have better than typical quality control for tubes of modern day manufacture. $ 8,600/ DD-P $ 7,095. 曙光胆（SG Tube）2024 新款出口型长沙曙光电子管KT88-98代KT88 EL34 保一年. I recently went through my bunch of cheap Chinese 2a3's and thought that I had selected a more-or-less decent pair, but testing (with kind assistance of another member here) showed one channel with a full 1% more THD than the other. Continuing our series about SureFire lights, Caleb is again joined by Andrew Wright from SureFire, who gives us the skinny on what makes the X300UA gun light different from the X300UB model. Anyone have recommendations on the more affordable end of the cost spectrum? Apr 27, 2015 · I have some nos 811A tubes and a 1250vct@. For very large tubes like: 811A, 300B, Globe Type 50. Note 1: This tube is not a replacement for 811A. diameter ca. Note: This tube cannot replace 811A. Operating frequency (MC) Ua and anode input power. > "Maximum Plate Voltage" rating for the 811A tube and is a bad. Feb 19, 2017 · No experience (yet ) with the 45 but lots of experience with the 300B. Matched tubes no extra charge. RLC-811A is more like 230mm long and ~70mm tall, and the mounting plate is 80mm diameter. 5V TJ Meshplate 300Bs (300Bs made to operate in the 2A3 heater and bias space). You can also connect to your voice assistant. Taylor are sold by RF Parts. The B800 and 810A are about the same size so that's fine. The power supply for the Power and Driver stages is Feb 20, 2024 · Feb 20, 2024. Obtained preferably from a separate, well regulated Smart Person/Vehicle/Pet Detection. 6W on 8ohm in pure class A1 operation. I would appreciate having an answer by tomorrow as the offer for the cameras will finish on Wednesday. They can be quickly adjusted from size to size with manual release. Modern reproductions may be beefed up though. Bolt - Designed for bolt threading. The 811A is bigger. "Standard" driver unable to serve next tube's grid over 0V Sent: Wednesday, April 09, 2008 10:58 PM. Jan 15, 2005 · Posted January 15, 2005. 00. 2A3 ra = 800 Ohms. unruled77. Add to Cart. PRODUCTS. For AC fi lament supply. The procedure is explained in the manual. I've also had 845,300b and 813 SE amps. Dimensions: 3 x 3 x 7 Inches. Cube Audio compares 2A3, 300B and 211 tube amps made by Tektron Italia using their incredibly overbuilt single driver speaker model the NENUPHAR. The 845 based CazTech SE-845 amps sound more "ballsy View replacement parts and parts breakdowns for your RIDGID 811A 1/8” – 2” NPT Die Head, Quick-Opening, RH. Qty: RLC-811A is massive compared to B800s/820A. It’s a 1,000 lumen rail mounted pistol light similar to the X300UH-B released earlier this year. 0mm which is a much narrower angle than both. #2. Subject: Re: [Amps] Replacing 811A with 572B. Racks - Alpine Line. The rest of the setup: DAC - Lampizator Baltic 4. Accurate Alerts. It is known as a 6B4G. There is a camera specs chart in the first post "welcome to the official" and lots of other info. Favourites would probably be 211 and 45. Both did a good job of lighting up my driveway and each turned the cams to color night vision. And, if motion is detected, the camera This amplifier uses Tung-Sol 5687WA military tube as the pre-amplifier and driver stage. These are all good sounding tubes. Edit 2: The spec I'm complaining about comes from this image on the RLC-811 page. ￥. 2A). Shop with confidence when you buy repair parts directly from RIDGID. 5A power transformer and would like some feedback on the sound of the 811A vs the 45 SET. but the driver stage implemented in this design with a 300B is able to control the I use flood lights at night to turn my cameras to color night vision. They seem to cull out bad tubes. Automatic release for repeatable number of threads. Rating: 2021-08-20. Both the "Standard" f=4. Correct minimum airflow is about 18-20 cfm on normal SSB and CW with three 811A tubes (25% less power), and 25-28 cfm on higher duty cycle modes for four 811A 2023-02-22. About the operating point. Feb 17, 2003 · The 2A3 (15 watts) is a much smaller plate dissipation tube than the mighty 300B. Only have the power tubes that came in it. The tubes arrived well packed. Mar 14, 2018 · Palustris said: Just a reminder: let's keep comparisons relevant. 3 volt heater 2A3 also. 110mm max. . Warranty 1 year from date of sale against gas, shorts, and emission loss when operated within manufacturer’s specifications. I found the EH and JJ to be similarly good sounding. They run about $85/matched pair. Sep 20, 2019 · By the early 2000s I had settled on the VAIC 300B as the best sounding 300B in my setup and sold the WEs for enough money to buy Tamura 5002 output transformers, which I still use, and a high quality CD player. 300B ra = 700 Ohms. The 811A's grid is always >0V and its always feeding current to the 6V6's cathode. Jan 27, 2013 · There isn't much to calibrate on the B&K 606 - it's a pretty simple emissions tester. The max plate voltage rating is also only 250 volts according to the RC-14, RCA tube manual for the original 2A3's. A good pair of 845s range from <$200 a pair to $1900 and 300Bs can be had for $200 a pair to $1600. Yeah their night vision with motion isn't the greatest, and I wish they'd bring back the old settings, but it's not unusable. The requirements for the driver tube have doubled. Time Owned: more than 12 months. hi wn ur bq pi ge jn cj km yi