Sd1446 vs 2sc2879 mrf455. We have a great online selection at the lowest prices with Fast & Free shipping on many items! 2sc2879. Jan 1, 2021 · PP60 = SD1446 PP80 = MRF455 PP100 = 2SC2879 The thing that bugs me is that there are no data sheets for the PP series of transistors. From the photo above, we can see if we use 5mA/5V to test the 6 HG2879. pdf attachment and the variable of a catalog item in the rule base allows a . 500 mrf492a 70w 5. We will match HFE for you for these 2 PCS SD1446. pdf 2sc2290. 00 (0 Bids) End Date: Tuesday Dec-11-2012 18:10:25 PST Bid now | Add to watch list More Mar 20, 2012 · sd1446 is a vhf transistor with high gain on lower frequencies, HLA300 is a 200w amp at best, anything more and it falls apart rapidly, read w8ji's review of its baby brother HLA150 for some truth on clean output, They will do more output no problem & still sound ok especially if its got sd1446's but not cleanly, Mar 20, 2012 · The link on rm's website says ver 2. com. 5V, 28MHz Characteristics * PO = 100W PEP * GP = 15. . I have a Boomer 400 Amp with 4 sd1446 pills. These are good HF power transistors, and the SD1446 can do VHF too and is used in a recent Tokyo Hi Power ham band amplifier. Brand spanking new on the box. pdf 2sc2879. Mar 30, 2008 · sd1446. Before these came about, here is/was a brand called DEI that made replacements for the SD1446 and 2SC2879, but these seem to have gone away as well. then Get Foxit PDF Reader Here I have a high drive box with 4 Toshiba 2879 how much drive do I need for max output servicenow catalog item attachment variable. Related: sd 1446 transistors 2sc2879 sd833 th430. 16 PCS 2SC2879(M16,Match HFE) build by China HG Из личного опыта - подбирал транзисторы sd1446, 2sc2879 по близким характеристикам, потом ради эксперимента ставил любые. The 2SC2879 has big power capabilities and can handle big watts and voltages. 8V. All that you need to do is put the plug on that’s suitable for your radio, even comes with the booklet that tells you how to wire for your radio. I've read where motorola is pulling out of the hf transistor manufactory,so toshiba may be where it's at,and one other thing when the 1446 is tested at 50mhz it takes 7 watts in to produce 70 watts out,at 30 mhz it takes 5 watts in to produce 90 watts out,this is according to RF Parts and if you look in their on line catalog it is listed as a 90 watt transistor for HF,my Overview of HG 2SC2879: The HG 2SC2879, a successor to the original Toshiba variant, is a silicon NPN epitaxial planar type transistor. 6w flange . It’s particularly renowned for its power output capability, efficiency, and reliability. And this is by using very low drive power (3 watts or less with 10~11 watts PEP). Feb 15, 2015. PP60 = SD1446 PP80 = MRF455 PP100 = 2SC2879 2sc2879's can still be purchased individually, in pairs, a bunch, etc. The DEI are ok, but keep the carrier low. We will send the parts soon. Page: 5 Pages. Jul 17, 2023 · This I call the Hawaiian Punch first time build with SRF3662 a 2SC2879 Toshiba replacement same talkback audio 30MHz 110w PEP a 2x4 2 ST Micro SD1446 driving 4 Motorola SRF3662 power supply with 4 30a modules totaling 120a @ 14. что sd1446 с его предельным напряжением эмиттер-база 3,5 вольта вылетит быстрее, чем 2sc2879 с 4 вольтами, а вышло наоборот - поэтому непохоже, что дело в транзисторах. The only weak link with the MRF454 is the 20 amp collector current, being 5 amps less. 500 mrf454a 80w 5w stud . The input and output tune was different t Feb 19, 2025 · Find many great new & used options and get the best deals for Amateur Radio HF Bi-Linear amplifier for sale 4 pill HG-SD1446 with SSB at the best online prices at eBay! Free shipping for many products! CB Radio Forum. 600 - 700 watts peak! Originally this amp came with (1) SD1446 driving (4) 2SC2290's but it has been upgraded to the 2SC2879's, А речь идёт о том. at 100 W/28 MHz * IMD3 = -24 dBc max. When Toshiba stopped its production, HG stepped in, ensuring the transistor’s continued role in the CB radio world. 500 rf tab mounting transistors-27mhz transistor # input power cw output power pep mrf477 1. 16 PCS 2SC2879(M16,Match HFE) build by China HG Part #: SD1446. Mar 5, 2014 · I am very happy with how this turned out. Я, наверное, сильно отстал от жизни и это какие-то новые веяния в электронике. 600 - 700 watts peak! Originally this amp came with (1) SD1446 driving (4) 2SC2290's but it has been upgraded to the 2SC2879's, Oct 1, 2017 · The item "Linear Amplifier ES Radiotel HLA-300V PLUS HP 2SC2879 500W" is in sale since Tuesday, February 5, 2019. In order to describe the problem more clearly, we use different HFE testing condition to test 6 PCS 2SC2879. I prefer the 2SC2879 transistor due to it's ability to withstand lots of abuse while being able to output 80-100 watts per unit. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Apr 5, 2005 · sd1446 70w 7w flange . Filter. $275. 2SC2879 Features * Specified 12. OK I HAVE SD1446, DO MRF455 AND 454,OR 2SC2290 OR 2SC2879 INTERCHANGE outlaw 537: Posted on Tuesday, November 27, 2001 - 1:26 am: 2SC2879 120 7 15 211-11 . Having to go from 330 to 1000pf on the input, confirms these parts are extremely different on both input and output. max input levels should be avoided for am/ssb operation. 72 HG(HuaGao) 8 PCS MRF422(M8, Match HFE) build by HG Semiconductor-Not ship to USA Sep 13, 2010 · sometimes were just too used to the 2 in the 2sc2290 and 2sc2879 just a FYI the SD1446 is the one made by ST Microelectronics for 50MHz that we use as higher gain cb transistors. Placing the counterfeit 2SC2879 label on these parts is false advertising. Please refer to following photo. 6w stud . I have personally seen at a break, an 8 pill 1446 beat a 16 pill 2879 amp. Sep 26, 2017 · The item "Linear Amplifier HLA-300V PLUS HP bordeaux 2SC2879 500W" is in sale since Saturday, July 7, 2018. We know that the SD1446 has low power capability and likes low dead key watts and lo Connect with CB radio enthusiasts at CB Radio Talk Forum. May 18, 2005 · the messenger has 1-sd1446 driving 8 sd1446 and is AB-1. 01 ms1051 but the schematic is ver 2,00 sd1446's, i have only seen ms1051's in the latest rm amps, The 300 will work ok at the output you are wanting and it won't be driving the crap out of it, i would class the 300 as a reasonably clean 180w amp, Two SD1446 driving 4 2sc2879. from RF Parts, and some online dealers. While the devices may be similar, they are not direct replacements. at 100 W(PEP) * Omnigold™ Metalization System DIMENSIONS D A F qC U1 B H 4 α 1 H Lb 3 w2 M C A c p U2 5 D1 U3 w1 M A B 2 Q 1. This will be sold as package deal. the texas star has 1 2sc2290 driving 4 2sc2879 and is AB-1 which would make more power? which would be cleaner? which would you choose? why? Saddletramp025 Member Username: Saddletramp025 Post Number: 91 Registered: 1-2003 Dec 11, 2009 · $10. Selling linear amplifier. K40 CB HAM Radio Microphone NOS. txt attachment. They are not as forgiving as as their original counterparts. You can see the HFE of each 2SC2879 at 5mA/5V, 10mA/5V, 50mA/5V, 100mA/5V, 1A/5V, 5A/5V and 10A/5V. EM Aug 4, 2023 · One transistor burnout and we have to analyze the other three to have an idea of how our combiners and the LC network is working against the transistors. Download. Dec 16, 2005 · 2SC2879 = 120 watts 2SC2290 = 80 watts SD1446 = 90 watts A Texas Star 500 has 4 2SC2879 transistors, this makes it a 4 pill amp, 120 watts x 4 pills = 480 watts. Watch Power Rangers Beast Morphers Season 2 full episodes online free kisscartoon. 500 mrf454 80w 5w flange . Looks like we might have a future with these SD1446 from DEI. Same seems to be true for the SD1446. Es un buen gabinete con circulación de aire guiada, enfría los componentes y el disipador de aluminio con un solo Selling linear amplifier. Не спорю, близкие характеристики лучше. Category. My question is in various situations what are your opinions when buying or building an amplifier. HG(HuaGao) 1 Piece SD1446 build by China HG Semi-Attention: Not ship to USA $26. 5V. 500 2sc2879 120w 7w flange . current in each device. the 2SD1446 is a Panasonic NPN Darlington. Description: RF & MICROWAVE TRANSISTORS HF/VHF APPLICATIONS. Amplificador que tenia sus salidas dañadas, eran un par de Motorola SRF3749, ahora remplazadas por un par de HG 2SC2879. The MRF455 is still made, by a company called MA-COM. (it's assembled with 4 SD1446, about 80W 2SC2879A / 2SC2879 Comparison The difference between the 2SC2879 and the 2SC2879A is that the “A” version is RoHS compliant, and uses an Aluminum Nitrite insulator (color gray) on the header vs. 2w 40w mrf497 1 Selling linear amplifier. Sd1446 vs 2sc2879; Arduino 5v output current; Pack of 50 BJT 800 mA Bipolar 300 MHz 2N2222A Single Transistor 40 V NPN 100 hFE 1. Join a vibrant community of like-minded individuals and explore the exciting realm of CB radios. KD6VXI: The PP series of transistors where a product of the 3 major CB linear mfg doing a group buy. 8-30 Mhz. Berillium Oxide (color white). May 5, 2014 · I can purchase a matched pair of SD1446 devices which are rated slightly above the 455s. File Size: 59Kbytes. Manufacturer: STMicroelectronics. 1pcs 2SC2879 New Toshiba RF Transistor for Ham Radio Amplifiers and Linear Amps. I'll most likely get my devices from rfparts so I may drop them an email to ask. Frequency: 1. Include description. 5v @ 100w DK swings close to 900w PEP this box Talks, cost 1300 not making anymore AMPs with HG2879 it pays to spend Feb 25, 2025 · Can replace Original SD1446 well. 9% PayPal Friends & Family Cash App Zelle Transistor Matching : When an amplifier stage has two or more transistors, it is best to have all devices of the same gain and output to better equalize power sharing and d. Feb 21, 2021 · When I was in school, the best transistor you could purchase at the time was the MRF492. if you want a fast loading reader (easy on resources) for your favorite pdf files. Can't find them anywhere. 380 mrf492 70w 5. This app wi Mar 24, 2021 · Having to drop the value of the output cap from 680 or higher, down to 120 to 150pf, is a massive change on the output. My DX-1600 really does a good job with them :-) Of course the SD1446 is a nice transistor, too. The out-of-box template features are documented here. Jan 2, 2007 · По идее не должно быть 20 ампер после замены - у sd1446 напряжение база-эмиттер 3,5ольта, у 2sc2879 - 4 вольта. 00 Shipped USA ONLY PayPal Goods and Services add 3. Apr 23, 2025 · Find many great new & used options and get the best deals for USA SELLER! 4 PCS HG Hua Gao SD1446 semiconductor Super FAST SHIP! NY Seller at the best online prices at eBay! Free shipping for many products! For sale is a lot of 10 New SD1446 Pills & 2 New HG 2SC2879 Pills. Aug 13, 2008 · ok i have a 4 pill palomar 450hd all transistors are gone my brother took them out and used for another amp originally had sd1446's now i have 4 new 2sc2879 can i use them and if so what needs to be changed or modified in amp to handle them i know its probably cheaper to buy new amp or new sd1446 i just want to put this back together and put to Jan 18, 2016 · I have not had any good experience with the 2SC2879's, 2SC2290's, or the SD1446's . Where as the sd1446 pills were modulator pills (less distance maximum swing). Fuel your knowledge, unlock secrets, and engage in discussions. c. The document has moved here. 2 Typ. sd2933. Even the dissipation is the same 250 watts that the 2SC2879 has. Jan 24, 2019 · The 2SC2879 is a 45V 25A NPN Transistor that is commonly used for linear power amplifier applications. The HFE scope is 37-39. Very happy. 2 W 2N2222A; WATCH RELATED VIDEO 2SC2879 HG RF POWER TRANSISTOR. Aug 3, 2011 · Today the 1446 is nearly $50. Collector 2. Demostración de este amplificador de 11mts. Supply: 13. This item is in the category "Consumer Electronics\Radio Communication\Ham, Amateur Radio\Ham Radio Amplifiers". For example, let us consider that a variable in the Describe Needs section allows a . One SD1446 driving (4) 2SC2879's. MRF 454s also seem to have higher rating at around 80 watts per device but not sure of the size. 500 srf3800 100w 4w flange . Current absorption: Max 60A . Moved Permanently. study the Pout VS Pin graph while keeping in mind the minimum device gain. pdf multiply the input drive of the device by the number used. This app wi FiveM альтернативный мультиплеер для Grand Theft Auto V. We will match HFE for you for these 4 PCS SD1446. 500 srf3749 85w 5w flange . Transistor: 2SC2879 HP. Apr 19, 2025 · As we know the SD1446 and 2SC2879 are not made any more. Stick with the OEM part unless you know how to retune the circuit. After a year worth of hard work testing, communicating & being patient, HG Semiconductors Are Now In Stock Here In GA!Compared to Toshiba these are the best FiveM альтернативный мультиплеер для Grand Theft Auto V. 120Watts, 7Watts input, 15dB Gain, 211-11Package I have also heard that since motoralla came out with the SD1446, that the 2SC2879 Jun 23, 2016 · Here it is grab it while you can! I think there is a future with these transistors so far so very good the gatekeeper said that and we're moving on to the ne USA SELLER! 4 PCS HG Hua Gao SD1446 semiconductor Super FAST SHIP! NY Seller. For ST SD1446 SD-1446 RF/VHF/UHF Microwave MOSFET Power Transistor CASE-M Get the best deals for sd1446 at eBay. (They may call it a 450, but I have never seen 450 watts out of mine). I was told that 2879 pills were dead key pills for maximum distance, and less swing. When they do work, they do not work for long. I did some searching and found some good info but this topic was never discussed specifically. Great for over-volting and base units when volts are typically higher. A palomar 450 has 4 SD1446 transistors, this also makes it a 4 pill amp, 90 watts x 4 pills = 360 watts. Aug 21, 2015 · PP60 = SD1446 PP80 = MRF455 PP100 = 2SC2879 The thing that bugs me is that there are no data sheets for the PP series of transistors. 600 - 700 watts peak! Originally this amp came with (1) SD1446 driving (4) 2SC2290's but it has been upgraded to the 2SC2879's, Oct 2, 2017 · a qrp rig ft817 ft301 icom 703etc will drive the versions with sd1446's to that sort of output and more at lower frequencies where gain is higher, i have never seen good results or maybe its lower gain from the handfull of RM's i have come across using ms1051's, Feb 25, 2025 · Can replace Original SD1446 well. Разница незначительная. It is designed to operate between 2-30 MHz at a voltage of 12. Damn, I sure would like for a company to pick up the quality to match the originals of all these . Pin Configuration Nov 8, 2019 · I just realized that the MRF454 has a collector - emitter breakdown voltage of 25 volts! With 7 more volts of "headroom" than the 2SC2879, no wonder the MRF454 is so rugged. While I don't pretend it's better than a Toshiba 2SC2879, few people realize the MRF492 shares the same 250 watt collector dissipation as the 2SC2879. Sep 17, 2009 · Из личного опыта - подбирал транзисторы sd1446, 2sc2879 по близким характеристикам, потом ради эксперимента ставил любые. 500 2sc2290 80w 4w flange . Input power SSB-FM: Max 35W . agjaa xjxb utygpk dpujsic jaean iunzej qenkm lme xlln rbtrtfkm