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I am building a MK2 version in a modular form (stage wise) using the Manhattan method.? BPF Question - Is the BPF common to both RX & TX (with no change at all) ? Thank you. 5Z4BT

I am building a MK2 version in a modular form (stage wise) using the Manhattan method.? BPF Question - Is the BPF common to both RX & TX (with no change at all) ? Thank you. 5Z4BT

The QRP Labs SI5351 VFO kit may be what you are looking for. The latest version will output I and Q for phasing rigs.

Need to build, or buy a kit, of an IQ Quadrature out test oscillator. Haven’t seen anything around!

Thanks

Hi Just seen your message so I thought I would chirp in with a little info. I am presuming when you refer to the "fundamental squarer" you are talking about its use in a H-Mode mixer? My Irwell HF

Hi Paul Great to hear that you have completed a scratch build of my MKll BitX multi-band transceiver. I have not seen or experienced the chirp you mentioned when going from RX to TX so I suspect the

Can the 74AC74 be configured as a fundamental squarer, ( no with need to divide) with 180 and 0 out?

Hi Paul The kit that K5BCQ sells is actually a design by ND6T. In the files section under K5BCQ is the schematic. Duplicate it. Many have tried to solve this problem, but it seems that the one by

Thanks for replying Ken. I'm on [email protected] and have seen the series FET switch and kit. I'll look into it.? I have a hunch that it might be the big electrolytics in the TDA2003 audio amp, I

Hi Paul Nice job on the HB G6LBQ rig. Over on the Bitx forum, the same problem exists in the change over between TX/RX. There is solution. K5BCQ has available a kit to stop the change over problem.

Hi again My homebrew (scratch built) G6LBQ BiTx txcvr is assembled and in debug stage. Overall, I'm pleased with the results, the Rx has lots of gain and the AGC works well.? I routinely enjoy

Hello Dave, I have been working on one of these myself, I'm interested in what VFO you had planed on using? 73, Rick - K6ZWB

My Almost completed BitX transceiver that I brought back from the USA with me is still sitting in the loft. I ?will never get time to complete it so I am offering it as a package for someone else to

Andy and the group, One more question for anyone using an si5351 clock as the VFO in a G6LBQ transceiver -- what buffering/amplification stage are you using between the si5351 clock and the ADE1 L7

Hi Andy and others, ? I note that that the RD16HHF1 PA FETs are biased to draw 745mA bias current, before drive. for best linearity and output power.? ? I am used to 5w single IRF510 QRP rigs with

Thanks for your comments Andy. I'll plan to use 100pF caps for CP1-5 and Cs in a 9MHz 6 crystal filter. I'll heatsink the RD16HHF1 driver with a common finned heatsink on top of the board. One

Adrian Thanks for the offer, but I've custom built a compact aluminium chassis for this rig, it is to be a 2 bander for SOTA and walking.? Thanks for the offer. 73 Paul VK3HN.

Hi Paul I spotted this post on the G6LBQ group. I have some MKII boards that have not been populated. If you are interested (and I can find them!) you can have them at cost price plus shipping ? I

Hi Paul Let me try and answer your questions: * The Mk II instruction manual refers to T1, an FT50-43 impedance matching transformer on the output of the xtal IF filter, but this is missing from the