Hi John, I missed the original run, and this is one of the things I sure would gather a few, and hope they could also get into a more continuous availability.
I intend to get a couple, but I would potentially want more later, but I don't always have the resources to get that lifetime supply. Appreciate the effort greatly, and when possible, I also recommend friends to take a look at these projects just to get them of the ground. Cheers, Magnus On 05/08/2018 09:09 PM, John Ackermann N8UR wrote: > Back in October, 2016, TAPR did a build-to-order offering of the TNS-BUF > low noise, high isolation buffer amplifier. The original 2016 post is > attached below. All of those units sold out, and recently I've had a > few questions about whether more will be available. > > TAPR will do another one-off production run if we can get orders for at > least 25 boards (the minimum to make manufacturing viable) by *June 1*. > You can place an order by going to http://tapr.org/kits_tns-buf. The > price will be the same as the previous production -- $119 plus shipping. > > If we receive orders for at least 25 boards by June 1, we will charge > credit cards and place the production order with our contract > manufacturer. If we don't get 25 orders, we'll cancel the project and > your card will not be charged. > > We expect to ship finished TNS-BUF boards about 60 days after placing > the production order. > > Best regards, > John > > -------- Forwarded Message -------- > Subject: [time-nuts] TNS-BUF High Isolation, Low Noise Buffer Amp Available > Date: Wed, 5 Oct 2016 10:15:46 -0400 > From: John Ackermann N8UR <j...@febo.com> > > I've previously mentioned a high performance buffer amplifier called the > "TNS-BUF" that I built based on a design by Dr. Bruce Griffiths with > further input from John Miles. Key numbers are: > > * Phase noise -140dBc/Hz at 1 Hertz offset, noise floor -175dBc/Hz. > (PN plot attached) > * Reverse isolation greater than 100dB; low enough that I can't make a > trustworthy measurement. > * Gain from -10 to +7 dB from 1 to 30 MHz; maximum output >18dBm. > * Nominal 18VDC operation, but works down to 12V with lowered > maximum output level. > > There's information, including performance data and schematic, at > http://www.febo.com/pages/TNS-BUF > > There seems to be some interest in an amplifier like this, so TAPR has > decided to do a limited production run. The amp is built with surface > mount parts, so we thought an assembled and tested board was better than > a kit. The price will be $119 each. But we have no idea how much > interest there is, and we need to build a minimum of 25 units to make > production feasible. > > So, here's the deal: you can order your TNS-BUF at > > http://tapr.org/kits_tns-buf > > through *October 20*. If we receive orders for at least 25 boards by > then, we will charge credit cards and place the production order with > our contract manufacturer. If we don't get 25 orders, we'll cancel the > project and credit cards will not be charged. There's no guarantee that > boards will be available for later order. > > We expect about 60 days between placing the manufacturing order and > receipt of the boards at TAPR. We'll ship to customers ASAP after > receipt. So that means you can expect to receive your order shortly > after January 1. > > So, go to http://tapr.org/kits_tns-buf now to place your order before > the deadline! > > John > > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.