[NLRS] SoftRock RxTx soon available again

[Bill K0AWU]

Hello Guys

  For those of you interested in the SoftRock SDR transceiver that I 
included in my AU07 - Low Cost SDR talk ... a new 40/30m version will be 
available in June. A 80m and a 160m version will be available later in the 
summer. Also later in the summer a 20m daughter board to be used with the 
40/30m version.

Bill  K0AWU  EN37ed

Still nothing for 28Mhz yet :>(((


The following email was released by Tony KB9YIG today  raparks at ctcisp.com

-------------------

Good Afternoon All,

The one watt RXTXv6.2 transceiver design is to the point where the
ordering of production parts has started for a kit run starting in
early June.  The two page RXTXv6.2 schematic is now posted in the
RXTXv6.2 folder.

The first RXTXv6.2 kit offering will be a 40m/30m dual-band kit with
the following four kit options and prices:

40m/30m RXTXv6.2 kit with 28.06 MHz and 40.5 MHz crystals supplied
for $30

40m/30m RXTXv6.2 kit with 28.224 MHz and 40.5 MHz crystals supplied
for $30

40m/30m RXTXv6.2 kit with 28.06 MHz and 28.224 MHz crystals supplied
for $30

40m/30m RXTXv6.2 kit with 28.06 MHz, 28.224 MHz and 40.5 MHz crystals
supplied for $31

The center frequencies provided by the three crystals are about 7.014
MHz for the 28.06 MHz crystal, about 7.055 MHz for the 28.224 MHz
crystal and about 10.124 MHz for the 40.5 MHz crystal.

Each kit price include the US/Canada mailing costs.  For DX mailing
each kit price needs to be increased by $1 to cover the higher
mailing cost.

The board size and performance of the RXTXv6.2 is the same as the
v6.1 kit.  Several design changes have been made in the v6.2 design
which include:

Removal of unused component locations on the bottom of the circuit
board

PA bias is now set by a bias regulator circuit so no PA bias adjust
pot is on the board

Mechanical interference between the 2N2222A driver transistor heat
sink and other components has been resolved

An aluminum heat sink replaces the brass 1/4-20 hardware used the
v6.1 heat sink

T30 size cores used in all toroid locations with two toroid inductors
removed from the circuit

Increase in coupling capacitor values on the audio buffers inputs for
less spectrum lost near the center frequency in TX

Cleanup of circuit board design to make the board easier to build


Two additional RXTXv6.2 kits will be offered later in June, a 80m kit
and a 160m kit.  A 20m kit is planned for late June or early July
where an additional inexpensive daughter board kit will be required
to go with the RXTXv6.2 board for 20m operation.

I want to thank Bodo, DJ9CS, who has recently tested a RXTXv6.2
example and reports that the unit easily meets the FCC -43 dBc
spurious emissions requirement.

RXTXv6.2 kits may now be ordered via PayPal to raparks @ ctcisp.com
(remove spaces around "@") with kit shipments to start around the end
of the first full week of June.

Thanks and 73,
Tony KB9YIG