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Date

Re: removing self from bitx20 forum

 

¿ªÔÆÌåÓý

Given all this topsy turvey nature of the world, it takes a whole world to make a radio.


Well said, Ashhar!

73 Allard PE1NWL

September 26, 2022 5:27 AM, "Ashhar Farhan" <farhanbox@...> wrote:
David,
HF signals is now a usa company. We just hired our first employee and we are planning to hire more soon.
The boards are still assembled in India. They use toroids manufactured in the USA, chips made in Taiwan, with machines from Japan. Almost all components are bought from Mouser in Cincinati.
A few dollars certainly go to women who wind the toroids and two guys who test the radios. We sell this with minimal profit to encourage people to try out, modify and learn radio.
Though the final design was compiled by me. Almost all the circuits are due to American homebrewers. Wes designed the TIAs especially for thr bitx. Most of the sbitx code is due to mentoring of Bob, W7PUA and Phil,KA9Q.
Given all this topsy turvey nature of the world, it takes a whole world to make a radio.
On Sat, Sep 24, 2022, 11:32 PM david todd via <ac9xh=[email protected]> wrote:
Just wanted to say goodbye to everyone,and enjoy ur sbitxes,and such. Im changing paths in my Amateur radio career.
Just going to buy USA made or make it myself.

Not to be insulting to others, and none intended, i was shocked when 3 USA kit dealers emailed me back when i asked to purchase some of their boards and kits.

:summary of cut and paste of all three mom and pop shops. wont name the shops,dont need to.
""However, given the low cost competition from outside the US, it is difficult for us to justify the expense of a large batch.
Here is one example:
We simply can not compete with this pricing and with recent supply chain issues and inflation, our costs have only increased.""

Meaning others have faster access to the chinese markets than USA markets.

So in order to be fair and support the small mom and pop shops, i wont be buying any radio kits anymore produced or designed outside the USA. Granted it limits my access to some kits, but I have a deep nawing feeling im doing myself right. Some may flame me but ohh well. to each his own.

Wish everyone good luck on the sbitx and the ubitxs too. I still own 3 ubitxs. but wont be purchasing more in the future. No offense to you Ashhar,you are a brilliant designer and buisness Man. A credit to the hobby.

good luck on all ur builds in the future and may you all keep the smoke in the pcb after building it . HI HI.

73
David
ac9xh





73, Allard - PE1NWL


Re: sBitx C403 Part details

 

According to the diagram 470pf the voltage is unknown but I would guess 500V - higher the better!

Raj

On 26/09/2022 9:12 PM, Vince Loschiavo wrote:
Parts list?
is it just me or I'm not looking in the right place.? Would like to know details of the Caps that are used in the filtering (ie C403) so i can get one or 2...
thanks
N2AIE
Vince


Re: Use driver stage as PA. #sBitx

 

Neils,?
The transformer of the IRF510s was used to drive a low impedance input of the IRFZ24ns (10 ohms each side). You could, instead, use the PA transformer to up it to 50 ohms. Instead of the three turns of the red/ornage wire secondary, remove one and make it a two turn secondary. Now wire up the two ends of the primary (that originally went to the IRFZ24Ns) to the two ends of the IRF510 drains (After removing the IRFZ24Ns!)
To increase the IRF510 current, short out R59, R65 and R72. Bias the transistors for about 150 mA each (300 mA total). You can also try removing R58 and R55 to pump the gain more. You should be able to get 10 watts, at least on the lower bands, much like the uBitx.
- f

On Tue, Sep 27, 2022 at 7:03 AM WP3DN <3voltios@...> wrote:
Hi!!,?


What is the power output per band that you get.


Re: Use driver stage as PA. #sBitx

 

Hi!!,?


What is the power output per band that you get.


Re: sBitx Commands

 

Two ways:
Press the RX button
Or
Ctrl-R

On Tue, Sep 27, 2022, 4:20 AM Vince Loschiavo <vince320@...> wrote:
Question:
When in an FT8 Transmission, and I want to Halt TX what is the command??
Thanks
Vince
N2AIE


Ubitx V6 assembled, bought for giga parts, for sale.

KO4FUD
 

100% working fine, frequency is aligned, checked in on a 20 meter, call on net and did 15 contacts. 175$us, shipped to lower 48 in us.?


Re: Collins Amateur Radio Club - excellent BITX article

 

I forgot i did this..

Vince


sBitx Commands

 

Question:
When in an FT8 Transmission, and I want to Halt TX what is the command??
Thanks
Vince
N2AIE


Re: Transverter Location #ubitx #2meters

 

I was mistaken, my uBITX is doing right around 6 watts on 10 meters
--
'72
Aaron K5ATG


Re: Transverter Location #ubitx #2meters

 

Yes, this transverter has a maximum power input of 10 watts. My uBITX is putting out 9.6 watts on 10 Meters. That is just under the max limit of power but I think that it will be ok.?
The tuner is for 80-10 meters, not 2 Meters. The tuner tunes an end-fed antenna that is attached to my house. It is 135 feet long and with a tuner, it will give me 80-10 meters.?
The 144 MHz Transverter uses the 10 Meter band and converts it to 144 MHz. The antenna connector labeled VHF ANT, on the transverter, goes to a 5 element 2 Meter yagi antenna. This antenna has an SWR from 1.1:1 to 1.2:1 across the 2-meter band. Because the SWR on the 2 meter yagi is so low I do not need a tuner.?

The HF tuner is for my HF antenna. In order for me to operate on multiple HF bands I need a tuner for the HF bands, again I do not need a tuner for the 2 meter band.?
Everyone has become so fixated on me using a tuner for 2 meters. That was never the question.
There is a fair amount of SSB and CW activity on the 2-meter band in my area. I would like to take part in that activity. Since my uBITX does not have 2? meters, I need either a dedicated 2-meter rig that operates on SSB and CW. My FM radio does not do that. The option that is in my budget is a transverter.?
My question is should the antenna tuner be placed before or after the 2 Meter transverter.?

Has anyone ever tried to add 2 Meters to the uBITX or the sBITX? Then I would not need a separate transverter.?
--
'72
Aaron K5ATG


Re: Transverter Location #ubitx #2meters

 

As Ashar said....

Antenna tuners aare for HF only.? Any 2M beam that would need that is?
in bad shape or completely untuned (useless).

THe Radio goes to transverter and the Transverter 2M output gots to 2M antenna.

NOTE: most transverters have a maximum power input and exceeding that can destroy it.


Allison
------------------
Please use the forum, offline and private will go to bit bucket.


Re: sBitx C403 Part details

 

I'm attempting to make a simple parts list for my homebrew build but I have not progressed very far with it.?
--
'72
Aaron K5ATG


Re: sBitx which filter is which?

 

Ashar,
Thanks that's what I needed.
Vince
N2AIE


Re: sBitx which filter is which?

 

Top to Down :
30- 21
14-18
7-14
3.5
- f

On Mon, Sep 26, 2022, 8:57 PM Vince Loschiavo <vince320@...> wrote:


Could someone mark which bands are related to which relays?
Thanks
N2AIE


sBitx C403 Part details

 

Parts list?
is it just me or I'm not looking in the right place.? Would like to know details of the Caps that are used in the filtering (ie C403) so i can get one or 2...
thanks
N2AIE
Vince


Re: sBITx shorting out #bitx20 #sBitx

Andrew
 

Mr. Farhan,

I had a moment where the IF gain was so forceful that the waterfall had turned entirely red; this was during that period when the raspberry pi digital board would shut down when transmitting. Could the WM8731 have been overdriven? Would this explain no reception input but the ability to transmit? Assuming this is where the signals come into the SDR, I could be wrong.

Andrew


sBitx which filter is which?

 



Could someone mark which bands are related to which relays?
Thanks
N2AIE


Re: Transverter Location #ubitx #2meters

 

Thank you guys
--
'72
Aaron K5ATG


Re: 16x2, 16x4 display for V6

 

Thank you Evan. Appreciate !

I will now go through the process of learning how to programme the Raduino and do this display change. Idea is to build a compact radio for portable digital use.

73
Bapi
VU2MZX


Re: 45 Mhz crystal filter

 

The mods are on ubitx.net


73
Evan
AC9TU