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Date
Re: Laser cut ubitx case SVG
Oh that looks good. I'll see about ordering one and adding it to the plan, additionally I'm thinking of some vents above and below the finals. I've not got time to make and sell these, but there are
By Max Lock · #37894 ·
A dual-band transceiver - trcv005.pdf
http://www.antentop.org/005/files/trcv005.pdf -- Mike Hagen, WA6ISP 10917 Bryant Street Yucaipa, Ca. 92399 (909) 918-0058 PayPal ID "MotDog@..." Mike@...
By Michael Hagen · #37893 ·
Re: Tuner? Well Sure!
There are several tuner projects based on Arduino. Here is one. https://hamprojects.wordpress.com/2016/12/31/hf-automatic-tuner/ You can find schematics for almost all the major vendors out there. The
By M Garza <mgarza896@...> · #37892 ·
Re: #bitx40 #parts need spec's on BITX40 capacitor C7 #bitx40 #parts
Surface mount R's and C's and transistors (such as the mmbt3904 of the uBitx) are much cheaper than their long-legged cousins. Here's roughly the same 0805 NP0 470pf cap over on Mouser at $6.40 for 10
By Jerry Gaffke · #37891 ·
Re: Crystal Filter Input and Output Impedance Measurements
Huge help!!!!!!! Thanks!! Sent from my iPhone
By Gordon Gibby <ggibby@...> · #37890 ·
Re: Laser cut ubitx case SVG
Very nice Max. Might I suggest adding a provision for a panel mount USB extension like this one... https://www.adafruit.com/product/3318 I can fumble around in Inkscape but I am far from proficient at
By Doug W · #37889 ·
Re: Crystal Filter Input and Output Impedance Measurements
Hi Gordon, I bought quite a few (20) of the 10MHz crystals from Tayda, currently they are 10c each (perfect for experimenting with):
By Kerr Smith · #37888 ·
Re: ALE, WINLINK and uBitX
?I think you'll get about double the power when you double the voltage. Not certain, but I think the transconductance of the device is possibly constant and so changing the voltage linearly increases
By Gordon Gibby <ggibby@...> · #37887 ·
Re: ALE, WINLINK and uBitX
What is the expected wattage out when you do that? I'm beginning to suspect it'll be far more robust as a winlink device than PC ALE, but at least we now know it CAN do that.
By tausciam@... · #37886 ·
Re: Laser cut ubitx case SVG
Yep, I would seriously consider purchasing one... -- K4OSS Charlie Ross
By K4OSS <k4oss@...> · #37885 ·
Re: Tuner? Well Sure!
Hi All, some time ago I built a single-ended version of Farhan's tuner shown here: http://hfsignals.blogspot.com/2015/06/a-balanced-tuner.html It is a basic L network with binary-weighted C and L
By Rod Self <km6sn@...> · #37884 ·
Re: Laser cut ubitx case SVG
You might think of selling those for people who don't have access to a laser cutter. You could make a few extra bucks and make people happy at the same time NO2Y
By tausciam@... · #37883 ·
Re: elves are at it
I just received this post today(Dec 31). Dear Customer, Happy New Year! We have received your payment of USD 119 on December 23, 2017 through Paypal. Your payment has been included in the 'Pre order'
By WA9GQT@... · #37882 ·
Re: Tuner? Well Sure!
?If you guys make this happen, I'm going to be rather amazed. Even if it merely does a clunky search search search algorithm in the beginning...... It can later do the intellituner thing with the
By Gordon Gibby <ggibby@...> · #37881 ·
Re: Tuner? Well Sure!
I agree with Rod...it should have its own Nano. The issue really isn't the processing power, but the ?BITX I/O lines are pretty scarce. Plus, you can buy the Nano for $3, so why not? Finally, it
By Jack Purdum <jjpurdum@...> · #37880 ·
Re: Crystal Filter Input and Output Impedance Measurements
What frequency crystals did you buy, and where did you get them may I ask? Sent from my iPhone
By Gordon Gibby <ggibby@...> · #37879 ·
Re: Crystal Filter Input and Output Impedance Measurements
Hi Andy, I have been reading over the page you linked to and it was a very interesting read. I tried using the method detailed in my first post and I did seem to get a resistance around what was
By Kerr Smith · #37878 ·
Re: Crystal Filter Input and Output Impedance Measurements
Hi John, I spent quite a while adjusting the resistors on my initial filter and it always seemed a little wobbly on the top, I did get a reasonable result eventually but I think my crystals were
By Kerr Smith · #37877 ·
Re: OOPS!! Re-factory alignment....
aha!!! yes, thank you, extremely helpful. The factory alignment does essentially the same steps just slightly different ways. Thank you for pointing that out, I hadn't seen it. The way I selected the
By Gordon Gibby <ggibby@...> · #37876 ·
Re: OOPS!! Re-factory alignment....
Useful???http://www.hfsignals.com/index.php/ubitx-tuneup/
By AndyH · #37875 ·