W6pql kits. The hard part is done which is the Co...

W6pql kits. The hard part is done which is the Copper heat speader and machine work. The PCB of LDMOS pallet was orderd from Ebay and it is clone of W6PQL project. COM (fully machined to accept spreaders) Time to build a 6M amplifier for my grid square outings based on a W6PQL pallet. It is based on an Arduino and the "I-SEQ" software developed by EA7HG. PCB matterial is ARLON TC-350, FR4 is not suitable for high power at 144MHz. Like the W6PQL design, the PE1RKI (Bert Modderman) amp uses a pair of XRF-286 transistors, but comes fully assembled and tested AND worked out cheaper (Dec 2012) than stuffing around building your own. First licensed in 1964; assigned W6PQL in 2003, which was the call first issued to my late father in 1938. Two BRAND NEW BLF188XR LDMOS transistors in package from RF parts. Some changes were applied to the scheme. I'm a big fan of KISS when building amps, that is "keep it simple stupid". HP 50 volt power supply, Runs on 120 or 220 volts. The main device’s assignment – ensure the inclusion order of devices listed above with correct order and delays. The massive heat sink that forms the base of the box made of aluminium profiles. Jim sells these modules as kits or as finished and revived modules. W6PQL: Solid State 1 kW Linear Amplifier for 2 Meters (article in QST Oct. Oct 22, 2025 · TL8BNW – Central African Republic Discussion in ' Contests, DXpeditions, QSO Parties ' started by MM0NDX, Oct 22, 2025. The price of LDMOS kit was 150$ (transistor not included), bought from "60dbmcom" Ukrainian seller: Ebay link. SOLD! I have a W6PQL 23CM/1296MHz, 150 watt, solid state amplifier for sale with internal power supply. Jan 3, 2026 · QRZ performance lately Discussion in ' QRZ Site Community Help Center ' started by KE8WMF, Jan 3, 2026. 5k 5watt resister from "Fan Enable" output to Ground. 2014) W6PQL: Notes on the 1 kW 2m LDMOS amplifier (changes since the QST article was written). I’ve had great experiences with Jim Klitzing, W6PQL’s amplifiers in our station so I contacted Jim to build a new 2m amplifier for our EME station. 75w drive which was below the expected 1000w. 4GHz. Hobbies other than amateur radio include wine making, precision shooting, golf and tennis. 1 He described a Class AB amplifier that used a Freescale MRFE6VP61K25HR6 power FET with characteristics I was looking for Homepage van Maarten Ouwehand PG1N Creation date : 05/09/2007 @ 20:43 Last update : 04/12/2025 @ 20:02 Category : 23cm Projects Page read 33927 times After discounting a W6PQL based kit, a PE1RKI 23cm 150W Power Amplifier was decided upon. With that said, the RF deck is not the hardest part to build, even if it is the most critical or performance. For those of you capable of making your own boards, here is the latest artwork for the 75w board (positive) (negative), and and for the 150w board (positive) (negative). This changes allow to use the A High Power Alternative Using General Purpose Relays If you can afford them, the relays shown to the right are the most commonly used from HF through microwave. Construction and Setup W6PQL 2m 1. Oct 26, 2024 · Frank Miller, K9HMB, of Harvard, Illinois passed away on January 28, 2020. I'm able to build these amps into a 12x8x3 inch chassis (Bud AC-424 chassis, BPA-1519 cover plate) with basic hand tools and a From scratch – total hand built from parts Combination of subassemblies (W6PQL) and hand build It had the article which ultimately won that month’s Cover Plaque Award, “Solid State 1 kW Linear Amplifier for 2 Meters,” by a very special person who has mentored me through much of the project: Jim Klitzing, W6PQL. 00 Sat, Dec 13, 08:46 PM See original listing I wanted to explore how water cooling actually worked. QRP operation can be fun Aluminum heat sinks www. ) I used (2) 24vdc fans in series and added a 0. This sequencer is designed for CO-OP work with VHF radio equipment including transceiver, PA and LNA. Feb 9, 2026 · Silent Key, David Harmon - KF7DSM 2/9/26 Discussion in ' Silent Keys / Friends Remembered ' started by KD7UWP, 3 minutes ago. Please email me with any questions. The Tohtsu relay (with the blue coil) is of moderate cost ($120 or so as of this The second has a driver stage and needs only 2w drive. This amplifier is in mint condition. Complete HF bandpass filter board kit. Homepage van Maarten Ouwehand PG1N Creation date : 14/08/2007 @ 23:18 Last update : 21/11/2025 @ 19:07 Category : 6m Projects Page read 36754 times Most of the companion components offered on the parts page such the control board and bar graph display are also configured to respond to negative voltages; if you are a kit builder and inclined to prefer positive voltage outputs, the next photo shows the proper locations for the diodes to be placed and how to configure those other boards to be Inside are two W6PQL modules and the necessary jewellery to connect all the parts of the amplifier. Jan 25, 2026 · Open Case RX6N - RZ1AWD Discussion in ' Add My Call Sign to QRZ - Database Helpers Forum ' started by RX6N, 6 minutes ago. It's configured for 10 watts in and 150 watts out. W6PQL pallets are usually available in kit form or assembled. W6PQL: 2 Meter KW Amplifier Kit Assembly Instructions Description I've modified the SSPA bias circuit slightly as shown Oct 1, 2017 · W6PQL RF input board with padder for 100 watt and protection. I don't know why that didn't happen yet. Dec 8, 2025 · Ended W6PQL Kit New BLF184xr MosFet uhf 500-watt amplifier pallet kit US $275. W6PQL. Dec 30, 2025 · I think what might make this award a bit more special is getting the 250th or the 1776th. From W6PQL: 1. This is a wiring diagram of the W6PQL modules. Jun 2, 2021 · I just posted a video on Youtube about a dedicated sequencer for the IC-9700. com WWW. Asking $1,595 plus actual shipping fee's. Pictures of other amplifiers built with the XRF kits can be seen courtesy of KD5FZX, VE4MA, and RA3AUB. 5kw Output Filter PCB only (sourced my own parts all 3kv rated) From W6PQL: " The Ultimate Amplifier Control Board " kit for amp control (for PTT sequencing and protection, and fan control, etc. Thank You!. It requires 8W of drive for 150W out. Both amplifiers are combined using Wilkinson couplers. Manager Reviews Home Reviews For: W6PQL Sequencer Kit Category: Ham Shack Accessories eMail Subscription Registered users are allowed to subscribe to specific review topics and receive eMail notifications when new reviews are posted. Comments? email to Published in QST magazine (May 2013) - there are several corrections and updates to the magazine article at the end of this document. Digital lighted Volt and AMP meter with Shunt. Jul 10, 2022 · Jim, W6PQL, will once again be active as CT8/W6PQL fromPico Island (HM58rn) between July 14th and September 6th. In test I got 800-900w output with 1. His listing should be marked SK. 5 Kw Linear Amplifier Interior View Manager Reviews Home Reviews For: W6PQL HF Amplifiers Category: Amplifiers: RF Power - HF & HF+6M eMail Subscription Registered users are allowed to subscribe to specific review topics and receive eMail notifications when new reviews are posted. Save yourself some headaches and give W6PQL some business. heatsinkusa. Dec 29, 2024 · Public Email Discussion in ' QRZ Site Community Help Center ' started by YD6AGG, Dec 29, 2024. Activity willbe on various HF bands and 2 meter EME. Inside are two W6PQL modules and the necessary jewellery to connect all the parts of the amplifier. The Dow Key units are very expensive (hundreds of $) unless you can find them surplus, but are also pretty much the gold standard, useful to 12. MRF 13750H moduls I purchased a partially constructed 2m W6PQL 1200 watt LDMOS amplifier kit Spring of 2018. Apr 28, 2024 · MFJ closing down manufacturing facilities effective May 17th 2024 Discussion in ' Amateur Radio News ' started by W4LKO, Apr 25, 2024. There are lots of different 2 meter low-power rigs in use out there, ranging from hand-helds for FM, older multi-mode transceivers, and even the newer all-purpose types like the FT-817 or the Elecraft 2M transverters. More details can be found on Jim's W6PQL website. The amplifier will include the 120VAC power cable and a custom W6ON black felt dust cover. The circuit solution basis was taken from W6PQL. It turned out that I have to build the following components to create a working linear: A 1200 Watt Power Supply Adequate cooling to remove 600 Watts of heat Here is the complete schematic for the control board If you are building this project from a kit I supplied, here is an assembly guide to help with placing parts, and below are the mounting instructions for the transistor and PC board: Shown below is a block diagram showing typical connections, and below that is a list of all connections available. uwocg7, g2h5a, cddelm, ud78, v8z7p, u1oiq, x9dz, utzkg, soao, o54m,