Re: uBITX Version 4 first attempt #ubitx #ubitx-help

Ashhar Farhan
 

I am reading this thread. I really have no comments except that there is no objective measurement or audio clip that i can comment upon. Hence let me make some general comments.
As old timers will testify, i never recommend, leave alone ship a circuit that i havent built at least twice and operated them on air for at least three or four mornings. I did extensive on-air tests as well as distortion measurements on the new  audio amplifier before shipping it out.
The thing that I have been unhappy about is that I had to reduce the overall gain. I took a decision to not revise the circuit too much but fix the excessive gain that can distort without the AGC. If we had the luxury of AGC, we could have lived with higher gain. The radio is now optimised to work well into 21 mhz. At 28 mhz, the gain is enough for headphone operations but speaker output will work only in a quite room. 
I continue to use the v4 regularly with FT8 as well as local ragchew on 40 meters. I have asked production to ship me a latest batch board to test it out. This is just in case there has been a mistake in terms of change of component values. I will report. This back in a day. 
- f

On Wed, 20 Jun 2018, 20:54 Jack Purdum via Groups.Io, <jjpurdum=yahoo.com@groups.io> wrote:
"...that it will be required by the builder to almost replace every component to make the rig work."

Bullcrap, and you know it!

"No one can expect a builder to rip out components and bodge the pcb to get it to work. This is not a user friendly board as it is all surface mounted and if you dont have good eye sight and the correct equipment then it will end up as a bin job!!"

More bullcrap. First, all 5 of mine worked "out of the box" and, add about three or four thousand more buyers who also have it working without mods, and I'm pretty sure you screwed something up. Second, I'm 75 with a sad excuse for eyesight, yet with a headset of magnifying lens, I've found that I can solder a 10-pin Si5351 chip the size of a match head onto a PCB. Have you even tried working with SMD parts? You knew before you bought the two rigs that they contained SMD parts and that many mods have been made. Sounds to me like you ignored your own research. Whose fault is that?

"I paid good money for a Bitx 40 and a Ubitx V3 and both were received damaged, a replacement Bitx was sent and that was also received damaged."

Evidently you didn't learn your lesson on the first one and should have paid the DHL fee on the second. I've purchase 5 units and everyone of them arrived in good shape, and the US is farther away the the UK. As someone once said: "Insanity is doing the same thing over and over and expecting different results". Seems to me to be sort of a "fool-me-once" situation on your part.

Jack, W8TEE

On Wednesday, June 20, 2018, 9:57:33 AM EDT, Ray Koster via Groups.Io <raykoster=talktalk.net@groups.io> wrote:


I think that Andy is correct in thinking why he should have to do all these mods to this kit!! I also have purchased and built several kits in the past and have never had to do the scale of modifications that are now required to get this kit to work correctly. It was never disclosed on the HF signals website that it will be required by the builder to almost replace every component to make the rig work and be legal on the air.

Why are you Guy's sticking up for Farhan, when he does not come forward and hold his hands up and say that the kit should have never gone to market.If this was UK produced ,then Trading Standards would have closed HF Signals down long ago!!!

No one can expect a builder to rip out components and bodge the pcb to get it to work. This is not a user friendly board as it is all surface mounted and if you dont have good eye sight and the correct equipment then it will end up as a bin job!!

Also most builders do not have the correct test equipment to make tests to insure that after all these mod's, they are legal when on the air with this kit

My biggest beef about all this is that HF Signals cannot deliver a kit to me that is not damaged in the post and please dont tell me I have pissed of the postman, My postman is a nice guy and so are the staff at the sorting office and India to the UK is a very long way

I paid good money for a Bitx 40 and a Ubitx V3 and both were received damaged, a replacement Bitx was sent and that was also received damaged.

When I pay good money, I expect to receive the goods in a usable state and then I do not expect to have to then remove and replace most of the components at my expense, and probably have to wait weeks for these new components to come in, just to get it to work correctly

Firmware updates are acceptable as the nature of the code can led to bugs creeping in and this is a very easy thing to do and does not require butchery of the pcb

Ray Koster G7BHQ

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