Carl This looks like it would work fine. It is a 16 bit interface, comparable to the Griffin iMic and most inexpensive USB interfaces. It seems a bit...
72423
warrenallgyer
Feb 24, 2013 10:14 pm
GERHARD Good points all..I remain doubtful about the mixer itself being the problem at those levels. It is nothing more than a switch and should be good out to...
72424
Tavi
n3ikq
Feb 24, 2013 10:35 pm
I'm at the point in the build where I'm supposed to be able to change frequencies on the Si570 chip. I'm seeing a very nasty 40MHz waveform with a lot of...
72425
kb9gpm
Feb 24, 2013 10:50 pm
Hi Joel Well if you are getting the tone tests to work and a good output, you are mostly there. I just finished playing with mine to test some things. In my...
72426
Justin Cumberland
thamanjc
Feb 24, 2013 11:00 pm
I'm sorry I cannot provide the link right off hand but some one sells them in a yahoo store that's linked to this group, 19$ I believe JMC...
72427
richard.lawn@...
richard.lawn...
Feb 24, 2013 11:20 pm
I must have been getting tired near the end of the build and anxious to finally finish. I soldered the 2222 and forgot to install the washer. The transistor is...
72428
John Greusel
greusel...
Feb 24, 2013 11:31 pm
Before you do anything drastic go back and read some of the SI570 posts in the past messages. 99 times out of 100 is a faulty solder joint. There is the...
72429
warrenallgyer
Feb 25, 2013 12:02 am
Rick I think it is not essential. It is there to prevent the case from touching the board and producing a collector to whatever short. If there is space...
72430
Milt Cram
w8nue
Feb 25, 2013 12:42 am
... Hi Warren, Why do you say that you think the mixer will not produce IMD? The switching mixer is an extremely nonlinear device. A true "mixer" multiplies...
72431
wn7t_paul
Feb 25, 2013 12:53 am
Hello group. After assembling my ensemble 2 receiver, I tested the voltages on resistors R32 and R33 versus frequency. The R32 voltage values changed...
72432
warrenallgyer
Feb 25, 2013 1:27 am
Hi Milt I am over my head in attempting a technical explanation. I have looked at the output spectrum and it does produce some interesting products but they...
72433
Jerry Haigwood
w5jhjerry
Feb 25, 2013 1:31 am
Hi Cecil, I found two things which kept my RX from working. First, the Recording panel of my Realtek HD control panel was muted. After un-muting, I started ...
72434
Milt Cram
w8nue
Feb 25, 2013 2:20 am
... Hi Warren, I would generally agree if we had pure square wave drive and perfect switches. However, the rise and fall times of the LO are not ...
72435
warrenallgyer
Feb 25, 2013 3:36 am
Milt I am on very unsteady ground here but plunging ahead anyway. Your patience is greatly appreciated. I read the article and I am not sure it directly...
72436
K2DMS
dsiminiuk
Feb 25, 2013 4:05 am
It appears to be good to 48 KHz, but for a little more you could go X-Fi and get 96 KHz ...
72437
Dave
brainerdd
Feb 25, 2013 6:05 am
Warren: The reference article assumed perfect square waves and zero switching times. The switches used in the softrock have very appreciable turn on and turn...
72438
warrenallgyer
Feb 25, 2013 6:32 am
Dave I am not clear if you are referring to the article I cited or the one that Milt did. The article that I cited was a lab test of the FST3253 which measured...
72439
Alan
alanzfq
Feb 25, 2013 7:51 am
... Subject: [softrock40] Ensemble RX II another newbie Si570 chip question... ... If the Si570 is not receiving any good I2C signals it will start at...
72440
Alan
alanzfq
Feb 25, 2013 8:01 am
... Subject: [softrock40] 2n222 question ... Rick, As Warren says, and I have proved, it is not essential. Just do not use too much force to push the heatsink...
72441
Alan
alanzfq
Feb 25, 2013 8:01 am
... Subject: [softrock40] Anomalous R 32 and R 33 voltage versus frequency values ... Paul, In fact this is not unusual. It is said to be due to a slight...
72442
yl2gqn
Feb 25, 2013 8:58 am
Hello, It's possible to build RXTX for superband 20/17/15 meters bands ? My interest to have a 20m and 15m bands on one super band. 17m is really not...
72443
John Williams
jswillms
Feb 25, 2013 12:47 pm
I bought a X-Fi also, works very well. At times you can buy refurb ones direct from Creative on their web site at a substantial discount from list. John -...
72444
Zack Widup
w9sz
Feb 25, 2013 2:38 pm
I've been using a Creative X-Fi model SB1095. It's well worth the money having that 96 kHz passband. I've been very happy with it. And that link you showed...
72446
pmackanos
Feb 25, 2013 3:42 pm
Is anyone using one of these 192 Khz cards , if so how are they working for you. We want to put a skimmer up for 6 meters and cover 50.000 - 50.192 We will be...
72447
AK4ZW.net
ak4zw
Feb 25, 2013 3:59 pm
It works great and you get the full 192k of scope. Sent From My iPhone...
72448
Paul Marbourg
wn7t_paul
Feb 25, 2013 4:58 pm
Thanks for the reply, Alan. Do you think this is a part specific problem that may improve by swapping in another FST3253? Or, is this a general device/layout...
72449
zs1ary
Feb 25, 2013 6:41 pm
My apologies if this is posted again to the group. Hi, I require to get in touch with KM5H, I require a case for my RX II Ensemble, I tried to order it on the...
72450
n2qt
Feb 25, 2013 6:47 pm
Hi Paul, That should work fine. Be aware though that since there isn't a lot of band noise on 6, and there is likely a lot of consumer electronic rfi, it's...
72451
Alan
alanzfq
Feb 25, 2013 6:51 pm
... Subject: Re: [softrock40] Anomalous R 32 and R 33 voltage versus frequency values ... Paul, I do not know. I checked one of my Softrocks after someone else...
72452
David Turnbull
ae9rb
Feb 25, 2013 7:17 pm
I suspect Tom has the same problem I did. The USPS recently changed pricing which required an update to my store configuration. I had no idea until a customer...
