UmTRX prototypes cost

Jean-Samuel Najnudel - BJT PARTNERS SARL jsn at bjtpartners.com
Sun Jul 15 17:58:09 UTC 2012


Hi Alexander,

Yes, all the manual handling operations we would need is also what makes me
feel a bit afraid of the cost too. In France, including all the costs they
need to pay for, a fab would charge manual operations around 30 Euros per
hour.

Regarding the UmTRX samples production schedule, I do not think this will
be ready at the beginning of August. We should expect to get the boards in
mid-August. Sorry for the delay. Actually, everything is slower in France
from around July 14th to August 15th. I am really sorry about that. Next
batches will be faster.

Best regards.

Jean-Samuel.
:-)


On Sun, Jul 15, 2012 at 6:57 PM, Alexander Chemeris <
alexander.chemeris at gmail.com> wrote:

> Jean-Samuel,
>
> Ok, we'll prepare drawings for the enclosure. But my assumption was
> that the biggest part of the cost would be handling, as it's a manual
> operation and prices in Europe for this are insane.
>
> I hope you have a good vacation! We'll try to mail you as little as
> possible :)
>
> Before you leave - could you update us whether the original estimation
> for this batch of UmTRX production is correct, i.e. we'll get
> prototypes at the first week of Aug?
>
> On Sun, Jul 15, 2012 at 8:46 PM, Jean-Samuel Najnudel - BJT PARTNERS
> SARL <jsn at bjtpartners.com> wrote:
> > Hi Alexander,
> >
> > Yes, this is a very good news. Except for selectivity, the UmTRX
> > performances and features are great and you still have a reasonable cost
> > structure.
> >
> > Regarding the enclosure, I think the fab can do this. However, they would
> > need to know the exact drawing of all the connectors. They really need
> > precise details before they accept to send me a quote.
> >
> > Moreover, most of the volume order will need outdoor enclosure including
> the
> > UmTRX, the diversity and selectivity daughter board and the CPU board.
> > UmTRX only in an enclosure will be only interesting for some lab
> > applications (excluding people who are ok with the board without any
> > enclosure). This would make the volume quite low and I am afraid low
> volume
> > would mean quite high price. For the board itself, the fab makes some
> > efforts on the price because they expect reasonably larger volumes but
> for
> > this enclosure for lab applications only, they will probably be quite
> > expensive.
> >
> > If you are still interested in this enclosure assembly, please send me
> the
> > exact drawing and I will ask them for a quote.
> >
> > By the way, I will be on holidays on next week. I may take some time to
> > reply to your e-mails. Sorry about this.
> >
> > Best regards.
> >
> > Jean-Samuel.
> > :-)
> >
> >
> >
> > On Sun, Jul 15, 2012 at 5:50 PM, Alexander Chemeris
> > <alexander.chemeris at gmail.com> wrote:
> >>
> >> Hi Jean-Samuel,
> >>
> >> This is very good news! It means we've met the target cost price and
> >> we haven't compromised functionality.
> >>
> >> Could you ask the fab how much would it cost to put the board into an
> >> enclosure like this, including the front panel and the rear panel
> >> drilling and engraving?
> >>
> >>
> http://www.fischerelektronik.de/web_fischer/en_GB/cases/M1.07/Miniature%20aluminium%20cases/PR/AKG105_030_/$productCard/dimensionParameters/index.xhtml
> >>
> >> The idea is to sell it to general public in small quantities for in-lab
> >> use.
> >>
> >> On Sun, Jul 15, 2012 at 7:08 PM, Jean-Samuel Najnudel - BJT PARTNERS
> >> SARL <jsn at bjtpartners.com> wrote:
> >> > Hi Alexander,
> >> >
> >> > Total cost for production is approximately 10000 Euros for 20 units,
> >> > including about 1000 Euros Non Recuring Costs. Approximate unit cost
> for
> >> > sample batches (6 and 14 units each) is a bit bellow 500 Euros.
> >> >
> >> > If we do not need to change the PCB, unit cost will be around 440
> Euros
> >> > for
> >> > 20 units batches.
> >> >
> >> > If we make 50 or 100 units batches, cost could be a bit lower but not
> >> > that
> >> > much.
> >> >
> >> > We could expect to save on the TCD-4029-26.0M. Today, we pay it about
> 15
> >> > Euros because of our low volume. For 50 or 100 units, we could buy
> this
> >> > part
> >> > directly from Pletronics and save about 5 or 6 Euros per unit.
> >> >
> >> > We could also save on the PCB. For 20 units, cost is 32 Euros but we
> >> > could
> >> > expect to save 5 to 10 Euros on it.
> >> >
> >> > On all other components, we could expect something like about 10 to 15
> >> > Euros
> >> > extra savings.
> >> >
> >> > For 50 units batches instead of 20 units, we could also save about 4
> >> > Euros
> >> > per board on the cost the fab charges for loading the assembly
> machines.
> >> >
> >> > For 50 units batches, we could achieve a unit production cost at 500
> >> > USD.
> >> >
> >> > Anyway, please find enclosed a few details about our production costs.
> >> > You
> >> > can see fab costs are quite reasonable expecially for our low and
> medium
> >> > volumes. This cost structure is really convenient to make our samples
> >> > and
> >> > gradually ramp up our production volumes. In case we reach much higher
> >> > volumes in the future, I am quite confident we could bargain a bit
> more
> >> > the
> >> > fab costs and certainly also save a bit more on the components
> sourcing
> >> > costs. Except for the low cost femtocells market, I really believe
> this
> >> > cost
> >> > structure will allow you to compete on the market in good conditions.
> >> >
> >> > You would need to add the cost of the enclosure, the PSU, the
> diversity
> >> > and
> >> > selectivity RF daughter board we need to pass the spec and the CPU
> >> > mother
> >> > board we need to run the Transceiver and OpenBTS. You should expect a
> >> > total
> >> > cost around 800 USD excluding the frontend (PA+LNA+duplexers).
> >> >
> >> > For your information, the dual TRX outdoor enclosure frontend with 10
> >> > Watts
> >> > PA I can get from my Chinese supplier costs 810 USD + shipping.
> >> >
> >> > Please do not hesitate to contact me if you need any extra figures or
> >> > information.
> >> >
> >> > Best regards.
> >> >
> >> > Jean-Samuel.
> >> > :-)
> >> >
> >> >
> >> >
> >> > On Sun, Jul 15, 2012 at 9:08 AM, Alexander Chemeris
> >> > <alexander.chemeris at gmail.com> wrote:
> >> >>
> >> >> Hi Jean-Samuel,
> >> >>
> >> >> Could you share the prices you get for UmTRX from your fab for this
> >> >> batch of prototypes and for the next batches? We have to understand
> >> >> the cost price to see what could we offer to customers.
> >> >>
> >> >> --
> >> >> Regards,
> >> >> Alexander Chemeris.
> >> >> CEO, Fairwaves LLC / ООО УмРадио
> >> >> http://fairwaves.ru
> >> >
> >> >
> >>
> >>
> >>
> >> --
> >> Regards,
> >> Alexander Chemeris.
> >> CEO, Fairwaves LLC / ООО УмРадио
> >> http://fairwaves.ru
> >
> >
>
>
>
> --
> Regards,
> Alexander Chemeris.
> CEO, Fairwaves LLC / ООО УмРадио
> http://fairwaves.ru
>
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