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Topics - RJ

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1
Need some thoughts on this unit please.

http://www.ebay.com/itm/141102674263?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT&rmvSB=true


Digital oscilloscope
* Channels: 2
* Impedance: 1MΩ 25pF
* Coupling: AC/DC
* Vertical resolution: 8Bit
* Gain range:
-16V ~ 16V (probe X1)
-160V ~ 160V (probe X10)
* Vertical accuracy: 3%
* Time base range: 1ns-20s
* Input Protection: Diode,50Vpk
* Auto set: Yes(10Hz to 60MHz)
* Trigger Mode: Auto, Normal and Signal
* Trigger Type: No, Rising edge, Falling edge, Rising edge or Falling edge
* Trigger level: Yes
* Trigger Source: CH1, CH2
* Buffer Size: 512KB/CH
* Bandwidth: 60MHz
* Max sample: 200MS/s
* Vertical mode: CH1, CH2, ADD, SUB, MUL
* Display Mode: X, Y-T and X-Y
* Measurements: Yes
* Wave save: Osc(Private), Excel and Bmp

Spectrum analyzers
* Channels: 2
* Bandwidth: 60MHz
* Algorithm: FFT(18 windows), correlation, power spectrum
* FFT points: 8-1048576/CHN
* FFT measure: Harmonic(1-7), SNR, SINAD, ENOB, THD, SFDR
* Filter processing:
FIR filter supports arbitrary range of frequency sampling method, and Rectangle, bartlett, triangular, cosine, hanning, bartlett_hanning, hamming, blackman, blackman_Harris, tukey, Nuttall, FlatTop, Bohman, Parzen, Lanczos, kaiser, gaussand dolph_chebyshev, window method design.
IIR filter support "Butterworth", "Chebyshev I", Chebyshev II, "Elliptic" type of filter design

Data recorder(Only ISD220A):* Channel: 2* Impedance: 1MΩ 25pF
* Coupling: AC/DC
* Vertical resolution:8Bit
* Gain range:
-6V- +6V(probe X1)
-60V- +60V(probe X10)
* Sample:
1 channel : 1K-24M Hz
2 channel : 1K-16M Hz
* Save File: Maximum 4G, recording time associated with the sampling rate

System: WinXP(SP3), Win7(32/64)

2
CB Radio Repair Forum / Cobra 29 S-Meter not showing recieve
« on: December 14, 2016, 12:18:04 PM »
If you ever run into a problem on a cobra 29 LTD where the S-Meter is working on Cal, SWR and RF out but not showing any receive in then check diode  D316 to fix this problem.

3
Test Equipment / ComTekk SINAD
« on: December 11, 2016, 08:31:43 AM »
I'm going to bite the bullet here and try this software. Since I have a few old computers laying around why not test this out.

Has anyone here used this software? http://www.comtekk.us/sinad.htm

15 day free trial will be enough to let me know if I need to buy it. Think I will try this: "a DC-blocking capacitor (0.1~4.7uF) is recommended as a minimum for protection of computer" just for safety reasons while testing this software. If it works out I will buy their Sound Card Isolator/Protector for better safety.

Stay tuned as I will post my results here to help others that have thought about buying this software.

4
Post your Shack, Shop, Repair room / My little setup
« on: November 30, 2016, 09:28:54 AM »
Nothing major here just my little setup.


5
Test Equipment / MFJ Watt Meter
« on: November 28, 2016, 07:03:26 PM »
Hey Buddy I noticed your using one of those MFJ-868 watt meters.

How do you like it and what is your thoughts of this meter?

6
Power Supplies / Thoughts on this power supply
« on: October 27, 2016, 09:51:06 PM »
Figured I would bring some life to the board and see what you guys think of this power supply.

Digital DC Power Supply 30V 10A Precision Variable Adjustable Lab Grade Portable
http://www.ebay.com/itm/332008921978?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

I use my Astron 50A on the main work bench but thought about getting one of these for a 2nd work bench that would not be pulling any heavy load.

7
Opening day of 2016 smoke pole season I tagged this nice 11 pointer.


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