A new design of FC-2, a 40 & 400MHZ PIC16F84A Frequency Counter
Project & Kit details are given at:

http://www.foxdelta.com/products/fc2.htm

Regards/Dinesh

This project is under re-design & new PCBs will be available hopefully
by Dec 10th. New design includes DIP8 AD8307 on main board and its
more copact than previous PCB.

Regards/Dinesh

FoxTrak, an APRS tracker measuring 7cm x 4.5cm is ready and details of
project may be found at:

http://products.foxdelta.com/foxtrak.htm

Regards/Dinesh

A PIC16F84A micro controller based hardware DTMF Echolink interface
project is uploaded at:

http://www.products.foxdelta.com/echolink.htm

On project page, I have also requested active hams on echolink to help
me for evaluation/test of this new kit.

Regards/Dinesh

Foxtrak is now tested with good performance report on hardware &
operation & kits will be available soon.

Regards/Dinesh

PIC16F876A LCD RF Power Meter has been redesigned and PCBs are ready.
Kits will be ready by next weekend.

New design includes dual AD8307 input sections and uses economical
pushbutton for menu operation instead of a rotary encoder.

New kits, called PM2, will be detailed at
http://products.foxdelta.com/pm2.htm

73s/Dinesh

After satisfactory testing of FoxTrak, kits are now available at $22
only. There is a discount for club & societies wish to buy 10 or 25
quantities.

http://products.foxdelta.com/foxtrak.htm

73s/Dinesh

Well Dinesh,

I thought the moderator on the echolink forum was a bit harsh towards
you. I didn't perceive your posting as being aimed at advertising your
products. Looked to me as if you were looking for qualified beta
testers to test a product to be used by members of that particular
forum.

You gave a good reply to the lad. Well done.  If you haven't looked at
the CQ100 program yet, you might want to try it out. It's not free.
the owner intends to charge $32US a per year for the use of the
servers. He give users a free trial for the first 90 days.

The audio codec is so good that he's got 6500 registered users and the
Echolink boys have been burning up their forum space with ways to make
Echolink work like CQ100.  The system simulates HF operation on a PC
based 'rig' that you download to access the service.

Here's the link: http://qsonet.com

It looks like a perfect use for your echolink interface as many of the
lads are trying ways to interface audio for SSTV, PSK31 and RTTY. You
might make a few sales on that mode.

Good website. Keep up the good work.

Cheers,

Alex -VK1AC

Hello Friends who responded to my echolink group messages:

Thank you for your informative mails.

Regarding echolink forum discussion, as you say, I did only want few
good amateurs to test.

Objection came from people already making & selling echolink
interfaces. Perhaps they think that only they can make it.

I am not sure of situation but it is heard that
http://www.echolink.org also promote same people who are freely
using this yahoo group by way of making advertising of their
interfaces. Ref to following messages:

18067, 19831, 17883, 13340, 12811, 12808, 10774 (this is a clear
advertisement of product) and 8559

Which means, "they" can advertise but I can not even tell members that
I am offereing interfaces free of charge.

Thanks for info on http://qsonet.com its very interesting. However,
personally I wish to setup a localized VOIP where I do not have to depend
on one specific system. Will try to work in this direction soon

73s/Dinesh

Hi Dinesh,

As per your request, would be happy to share my experience building
this project.

Firstly, a copy of the necessary software should be downloaded from
(http://www.oshonsoft.com/picprogserialsetup.exe)for PIC12/16 micro's.

Links on your web page direct to PIC18 software which cannot
program/read the Pic12/16 chips.

To confirm correct operation of serial port and Max232 ic, a loopback
connection can be made on programmer board by removing pre-programmed
Pic and inserting a temporary link between pins 7 and 8 Rx/Tx pins.

With terminal software (Telnet Etc...) serial port can be driven, both
Tx and Rx led's will indicate if port and Max232 are functioning.

Only glitch I encountered during my build of the project (and also on
my own Veroboard prototype) was that the pre-programmed Pic16f628a
seemed to be dead, with no clocking from crystal oscillator.

This was corrected by replacing the ceramic load capacitors (C15,C16)
on crystal oscillator circuit from 22pf to 47pf.

Both programmers are operational and have not missed a beat since!

Hope this information helps!

Kind regards,
Don

Many home brewers have taken keen interest in this programmer.

Please post your trouble on this forum so that others trying to build
similar programmers can benefit.

Please also note that when I built this programmer, I bought a single
user license of oshonsoft IDE only for the purpose to generate hex
files for this programmer, to assist others by way of providing free
firmware.

Please visit oshonsoft wesbsite & download programming software of
your interest, study that software & its capacity to program your
expected PIC chips. Its this software which will get you programming
capability to program listed PIC chips.(Read list of processors on
oshonsoft webpage)

Those who built similar programmers are requested to help others
trying hard to build their own. If you help answer others, would help
me work on my present development work.

Regards/Dinesh

Here are step-by-step instructions to provide a simple interface
between the Fox Echo board and your PC for Echolink operation. This
arrangement uses the Fox Echo Board to provide audio and serial data
control interface between your PC and radio.  DTMF tones are decoded
by Echolink. You will need to have Echolink configured in the "Sysop"
Mode as either a Link (-L) or Repeater )-R).

For PC to Radio Direction:
1. Connect TX Mic Input to TX (J3,Pin 5), and Gnd (J3, Pin 4).
2. Connect Cable between SC Spkr Jack (J5) and PC Soundcard Spkr Line
      output (Green Jack on PC).
3. Place the "H2" jumper in the 1-2 position on the Fox Echo Board.
4. Connect RS-232 cable between PC Com Port and Fox Echo Board.
5. In Echolink, goto "Tools/Sysop Settings/Tx Ctrl/" and set "PTT
activation" to "RTS".
6. Under "tools/Sysop Settings/Tx Crtl/" Also select the proper Com Port.
7. To confirm operation, Connect to the Echolink "Test Server" and
verify red "ptt" led lites on the Fox Echo board, and transmitter keys.
8. NOTE: The "RTS" lead (J1, Pin7) should go "High" in Transmit Mode.

For Radio to PC Direction:
1. Connect Radio Speaker Audio Between RX In (J3,Pin 1) and Gnd
(J3,Pin 3) (Careful of level)
2. Connect Cable between SC Mic Jk (J4) and PC soundcard Mic Input
(Pink Jack on PC).
3. In Echolink, goto "Tools/Sysop Settings/Rx Ctrl/", and set the
"Carrier Detect" to "VOX".
4. Goto "Tools/Sysop Settings/DTMF and select "Internal" in the DTMF
Decoder Box.
5. Send DTMF tones from a HT or Mobile Radio, and Echolink should
display the "Digits" in a small gray box at the lower right-hand side
of the screen as they are received by Echolink.

Adjust Tx and RX Interface Levels in Echolink by going to:
"Tools/Adjust Volume/Playback & Recording"
Use the Echolink Test Server to verify proper program operation.

Please email me if you have any questions,

Frank - K7SFN

Simple Echolink interface "FoxEcho V1.0" which uses echolink's internal
DTMF & PTT is tested & kits are ready in small quantities. Upgrade to
V1.1 which will provide external DTMF will be available when PIC
firmware is fully tested.

Kits are priced at $30 and designed on double sided PTH boards. Please
visit project page for more details at:

http://products.foxdelta.com/foxecho.htm

Regards/Dinesh

I am trying to locate plans for a homebrew LW converter. Around 160
khz.Any suggestions or links will be appreciated.
Thanks
Ken

A small echolink interface project with 2 isolation transformers & 2
opto coupler is posted at:

http://products.foxdelta.com/tinyecho.htm

73s/Dinesh

Recently I have completed following projects and have first prototype
under test:

LCD L/C Meter
LCD SWR Meter VHF/UHF 100w
LCD SWR meter HF 100w


Nina's Section:
PIC16F84A Midi Keyboard Controller


Kits in small quantity will be available soon.

Regards/Dinesh

Claude MULLER F2JL, has developed 60MHZ to 3GHZ DDS Sythesizer.

Please visit his webpage at:


http://cymtronic.club.fr/

73s/Dinesh

HF 100 LCD SWR Meter project preliminary information is uploaded today
at: http://www.foxdelta.com/products/swr-hf.htm

Regards/Dinesh

A new, redesigned repeater controller project was completed & tested
with good results. Controller uses a pic16f84a, MT8870 and ULA2304
chips & is password protected.

Please visit project page at: http://products.foxdelta.com/repeater.htm

73s/Dinesh

Hi Dinesh and all.

Just found your site (thanks to Nigel Goodwin).....wow

I am building a generic PA controller for a dual brick 23cms PA. To
show how long it has been on the bench, it is using a 16F877A !!!

I am having problems with the SWR and Power measurements. I have a
good 50r stripline with diode detectors and load resistors (all SMT)
which I was trying to sample the output directly with the A-D of the
PIC. As I am sure you can guess, this does not work. Not too bad for
high power (forward) but not usable for low power (reverse). I see
that your 500Mhz design uses the AD8307 which tops out at 500Mhz. Do
you think a similar idea with a suitable device would be OK at 23cms
??? If so, any idea which device. The AD8311 looks promising as it is
good for 2.5Ghz but the dynamic range looks a bit tight at 50dB

73 Dave

A Project of  satellite tracking interface using PIC1F688  is completed
and kits are available in small quantities. Kindly visit project page
at: http://www.foxdelta.com/products/st1.htm

73s/Dinesh

Redesigned 40/400mhz Frequency Counter FC2A kits are now once again
available. New boards are designed with few changes by way of reducing
smt parts, providing dip switches in place of headers and now have
possibility to use 78L05 regulators for those who wish to use it as a
portable test meter.

kindly visit project page at: http://www.foxdelta.com/products/fc2.htm

73s/Dinesh

hello

Final, tested version of PIC16F84A echolink interface called "Foxecho-
K7" will be available assembled & in kits with an alum. case,
isolation transformers and AGC card.
Delivery by next week or latest by Sept 15th. Documentation will be
uploaded on concerned web page soon.

73s/Dinesh

Congrats Dinesh
Hope to hear about the Kit introduction soon.
You do a great job of the kits and projects to help many homebrewers.
Neat packaging , when I received the kit I was remembering about the Dick
Smith kits I used to get.
I am thankful to you for the DTMF controller kit and its works great.
Great job and keep it up.
Happy homebrewing.
Best 73
Pop
VU2POP

----- Original Message -----
From: Dinesh Gajjar
To: foxdelta@yahoogroups.com
Sent: Tuesday, August 28, 2007 9:28 PM
Subject: [foxdelta] Echolink Interface- Foxecho-K7


hello

Final, tested version of PIC16F84A echolink interface called "Foxecho-
K7" will be available assembled & in kits with an alum. case,
isolation transformers and AGC card.
Delivery by next week or latest by Sept 15th. Documentation will be
uploaded on concerned web page soon.

73s/Dinesh

A new project of LCD Dual thermo Meter (documents not completed yet)
is posted at http://www.foxdelta.com/products/thermo.htm

Project based on 16F876A micro controller to measure dual temperatures
using microchip analog sensors.

Regards/Dinesh

After a long wait/delay, foxecho-k7 kits are now available. Kindly
visit http://www.foxdelta.com/products/foxecho.htm for more details.
Regards/Dinesh

Prototype board made of 1wire weather station is now running well and
with same reliability as a commercial station. Results are very
encouraging and I will be making small quantities of kits for those
interested in making fine weather stations at low cost.

For active view of this prototype 1wire weather station, please visit:

http://www.vu2fd.com/weather/



73s/Dinesh

PS: Wind instrument is still down due to forth coming kite festival, to
avoid damage by strings of hard pulling threads!!

A new project/Kit of VHF/UHF SWR meter with two line LCD diplay is now
available. Project uses a PIC16F88 for SWR calculation and a SMT
component sensor/bridge for RF pick-up. Meter will measure to 100W.

Please visit: http://www.foxdelta.com/products/swr-vhf.htm

Regards/Dinesh

I have added a Project on an advanced Satellite Antenna Tracking
Interface : ST3: which uses a PIC Micro and interfaces thru EasyCom and
GS-232 servers with Satellite Tracking Programs Like: SatPC32.

Please visit following URL for more details:

http://www.foxdelta.com/products/st3.htm

Regards/Dinesh

1. Hi Guys,