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Iz, According to the email trail the 800 ohm load was selected because that was the maximum the test fixture could produce.? The 6 dB figure comes from a simulation that I did in my lab. I calibrated

We need an update in QST! Was the 800ohm load selected to test the off-frequency characteristics of the 49:1 transformer? Il the load becomes 16ohm because of the transformer, the mismatch loss should

Gordon, your summary is spot on. The appropriate termination value for the 49:1 transformer would be 2450 ohms in order to present a 50 ohm load to the source. The load box used in the ARRL lab would

Hello Miguel, I have seen the video on you tube and you have done a remarkable job. I am unable to find the sketch on the above link Can you please share the link to me on my email VU3RQX@... 73

Noticing this thread is taking on the epic proportions of a similar thread involving baluns on another forum some years ago.? It resulted in this paper:

?Do you know why they didn't use 49*50 ohms as their termination? I didn't read the email trail (sorry, just not enough time in this world) but it seems like you could make a dummmy load for that if

I have been asked by private message what it is about the QST Review test methodology that I found invalid. I constructed this explanation of their test in response and I would like to share it with

I have 2 brand new, unused Raduinos from V4 kits of mine that I will never use.? These are the later Raduinos that have the NANO mounted on the backside to keep it from interfering with the display.

Hi, Dennis, Do you have a link for the VF4PLN board? 73, Paul K2AYZ

This issue of carrier leak on PTT caused by DC flow through the product detector seems to be absent in uBitx. Raj

Right Jerry! First mod I did on the ubit. now when I tune across the bands I hear the relays switching during RX. Raj

Yes, N3GO gets the credits for the good idea!! Bob N1KW

Thanks for the clarification. My name is Peter Peter Paul Fox G8HAV Mid-Cheshire Amateur Radio Society 5 Llandovery Close Winsford Cheshire CW7 1NA Group Controller Dane Valley RAYNET Tel: 01606553401

Sorry . your name is? missing - It is hardly surprising that your software cannot import gerbers, which are simply a set of instructions for an industry standard PCB mafr process from the sixties.?

Hi, I have been trying to get some software to produce the layout from a Gerber file, but I keep getting companies who will make a PCB from a .Gbr file. Is that the way to go? I use DesignSpark by RS

https://amateurradiokits.in/pictures-of-ubitx-case/ That link gives some detail, I was particularly interested in the led wiring which is shown here. I also have the connectivity for the rear panel if

Richard, I don't know if you could obtain the exact original harness's, but you could make your own if it comes down to it. You could buy the connectors from Mouser/Digikey I suspect, but for the

The connectors are Molex type KK 0.1” pitch and are widely available through places like eBay. Available in various number of terminal “ways” The terminals themselves are crimp but I solder them

Glad you brought up the CW filter. Very frustrating. Awhile back I built a QRPp rig from Breadboardradio. Com. Great little half-watt transceiver. The other night frustrated with the bandwidth of my

Allison sort of off topic? , recent email to you at ARRL addr? re avail of RF Ts in Australasia NOS? as a result of all work done for? Bitx . Definitely not as a Schiller? but you can take it as