¿ªÔÆÌåÓý

Date
Re: Need New Raduino Board
Timothy, DO NOT PRIVATE EMAIL ME.? You are plonked, Clear!
By ajparent1/kb1gmx · #57831 ·
Re: Lead-free solder, regular solder
I think choice of solder manufacture is a personal just like the style of iron. What works for one doesn't for another, I just don't get along with (genuine) HAKO. It's possibly the Multicore
By Alan de G1FXB · #57830 ·
Re: New build uBITX wont run
Great news. Allison
By ajparent1/kb1gmx · #57829 ·
Re: Need New Raduino Board
Timothy, You should check the site first.? No such reference.? They may sell them but there was no reference on the page I could find. of course one can email them and ask... Allison
By ajparent1/kb1gmx · #57828 ·
Re: UBITX won't key--- solved
Could someone walk me through the menu to turn on the keyer?? I get dots, but no dahs, just out of the installation of the correct resistors.? And get straight key working fine. Some where in the
By Eddie Esserman · #57827 ·
Re: End Fed antennas w/ uBITX #ubitx
Iz oos, Depending on a few things self resonance is a bad thing.? For that transformer its likely the core would absorb a lot of power as a side effect of the circulating currents in the wire.?
By ajparent1/kb1gmx · #57826 ·
Re: End Fed antennas w/ uBITX #ubitx
Yes Warren also a long run of unterminated RG174 shows an acceptable SWR.
By iz oos · #57825 ·
Re: Need New Raduino Board
Allison... it must be a Millennial thing !!.? (the lack of memory /IT) Seriously-? there have been other posts that HF signals will sell new Raduinos at USD 35 plus courier charges (however my guess
By Timothy Fidler <engstr@...> · #57824 ·
Re: End Fed antennas w/ uBITX #ubitx
Hi Allison, yes the small binocular core must be a material similar if not 43, which for the low bands such as 160 and 80m has its use. What happens to the self resonant frequency? Is RF all converted
By iz oos · #57823 ·
Re: New build uBITX wont run
Am 25.08.2018 um 20:23 schrieb ajparent1/KB1GMX: Hi Allison and tnx for your help to find the bug. It was a contact problem in the socket between Raduino and uBITX. Now the uBITX is up and running. 73
By Matthias Zwoch · #57822 ·
Re: End Fed antennas w/ uBITX #ubitx
Iz VSWR measurements as a means of evaluating the performance of wide band transformers are almost meaningless. In order for the VSWR to mean anything one must first know how much power is actually
By Warren Allgyer <allgyer@...> · #57821 ·
Re: kd8cec sketch
*This is from my friend Konstantinos SV1ONW please open it with LibreOffice Writer . *
By SV9CVJ Nikos · #57820 ·
Re: New build uBITX wont run
Make sure you not in transmit mode! Check the switched 12V line to see if its 12V-T or 12V-R Two most common problems is forgot the resistor for the key (4.7K) so its in CW tx mode. And the TX
By ajparent1/kb1gmx · #57819 ·
Re: End Fed antennas w/ uBITX #ubitx
Iz oos, The amount of wire interacts as well.? for example the white toroid with lots of wire runs into self resonance at 20.8 so any frequency close to that will be impaired. At low frequencies
By ajparent1/kb1gmx · #57818 ·
Re: Lead-free solder, regular solder
As a youngster I wondered why the tips on my Weller soldering gun broke after intense use.? I wired large relay terminals, switches, and small light bulbs for projects.? Turns out the solder
By Jon Titus, KZ1G <tituskz1g@...> · #57817 ·
New build uBITX wont run
Found now time to wire up my uBITX V4.3. After that I switched it on and measured the current. It took 370mA - too much. No magic smoke, nothing warmed up except the 5V regulator on the Raduino board
By Matthias Zwoch · #57816 ·
Re: Need New Raduino Board
Since the group using mail have no memory. Check here. http://www.w0eb.com/ Allison
By ajparent1/kb1gmx · #57815 ·
Re: Fried irf510s replaced but
Jeff, K2, nice.? Not always noted but it was a simple radio that made the top of Bob Sherwood's receiver list for performance.? It was that good. As to the ubitx I knew of I suspect some of the 20m
By ajparent1/kb1gmx · #57814 ·
Re: hi from italy---
Hi in izq Danilo, the 2822 was used up to ver. 3. Then as the failure rate was high it had been replaced by a different circuit. The 2822 by the way was able to produce a pretty loud volume. In your
By iz oos · #57813 ·
hi from italy---
hello guys, i'm? in3izq danilo? and? just? have? finish my? ubitx ver. 4.3 . have? some problem : audio? is very loud ? its because tda 2822 is broken ? on? mother board have not found
By danilo datres · #57812 ·