Re: [Flexradio] [SPAM] Anyone using a wireless mic/headset?

2009-06-20 Thread Mack
I built the Jabra and Parrott combination listed below and I can report that it works fine with the Flex radio. I just personally don't use VOX very much. Feel free to email me off list if you have questions. 73, Mack de WB4MAK -- From: "Bret Mi

[Flexradio] PowerSDR 18.1

2009-06-20 Thread charles
I was trying to get PowerSDR 1.18.0 to go with MixW on my Flex 3000 but I could not get the PTT to go. Fortunately PowerSDR 1.18.1 was released yesterday and with it the PTT problem is solved and MixW is now working fine. Thanks Sig, NV7E + ZS6SIG __

Re: [Flexradio] All using SVN 3166 or higher

2009-06-20 Thread Brahmangou
That would really be misleading to potential customers. Ddutil, VAC usage as "experimental"? When I bought the Flex I was really surprised to find all of the contortions necessary to make it perform the digital modes. 73, Marty In a message dated 6/19/2009 9:48:29 P.M. Central Daylight Ti

Re: [Flexradio] All using SVN 3166 or higher

2009-06-20 Thread Kirk K6KAR
Contortions! All in all, I found it quite easy. I guess it's in the eye of the beholder and or sophistication levels. 73, Kirk -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of brahman...@aol.com Sent: Saturday, June 20, 200

[Flexradio] New Flex 3000 - RF Issues

2009-06-20 Thread Harold Rosee
I just received my FLEX 3000 yesterday. It hooked up pretty easy and receives well. My problem is with the transmit. As soon as I turn the power up past 60 watts RF is getting into something and the software locks up. The transmitter does stop transmitting but I finally get a host error

Re: [Flexradio] New Flex 3000 - RF Issues

2009-06-20 Thread Burt
I had the same problem on 3885 with my amp when it exceeded 150 watts. The problem went away. The computer is sensitive. I found if you change wire layout it can help --- On Sat, 6/20/09, Harold Rosee wrote: > From: Harold Rosee > Subject: [Flexradio] New Flex 3000 - RF Issues > To: flexradio

Re: [Flexradio] New Flex 3000 - RF Issues

2009-06-20 Thread k4elo
Sure sounds like rf into the computer to me. First suspicion would be the kvm. You could try adding a ground wire from the kvm case to your station ground or temporarily taking the kvm out of the loop and see what happens. Or try adding a ground wire from the computer case to your station ground

Re: [Flexradio] [SPAM] New Flex 3000 - RF Issues

2009-06-20 Thread Tim Ellison
Harold, Here are a few things for you to try. First find out where the RFI is coming from. Does it lockup with a dummy load attached? If not, you have common mode currents on the shield of the coax coming from the antenna and it is best to eliminate them before they get into the shack. It i

Re: [Flexradio] All using SVN 3166 or higher

2009-06-20 Thread Tim Ellison
Marty, I think what Jack is saying is that new code alone does not define what is and is not "experimental". Hardware and operating systems factors are just as important as changes in the source code, as they are all inter-related and interdependent. Where you "draw the line" is a matter that

Re: [Flexradio] Windows 7 beta - Flex firewire driver defaults to48000 solved

2009-06-20 Thread Dave
OK, I think I found the cause of the firewire driver reverting back to 48000. Seems the beta of Kaspersky Antivirus was blocking changes to be written & saved to the PC when Kaspersky was set to interactive mode. I set Kaspersky to basic mode and also tried AVG antivirus and it saves changes wh

[Flexradio] How to use the recorder

2009-06-20 Thread Steven O'Neal
I've been trying out the recorder function in PowerSDR and can't seem to make it do what I want. I've searched in the Knowledge base and the Flex3000 manual, but still a bit confused on how to make this do what I want. I'd like to record a voice CQ and then use it to call CQ using playback of

Re: [Flexradio] [SPAM] How to use the recorder

2009-06-20 Thread Tim Ellison
The record function really isn't designed to be "voice keyer" I recommend to check out Ray's Voice Keyer software. http://kc.flex-radio.com/KnowledgebaseArticle50275.aspx -Tim -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behal

Re: [Flexradio] Windows 7 beta - Flex firewire driver defaults to48000 solved

2009-06-20 Thread Brian Lloyd
On Sat, Jun 20, 2009 at 6:39 AM, Dave wrote: > OK, I think I found the cause of the firewire driver reverting back to > 48000. Seems the beta of Kaspersky  Antivirus was blocking changes to be > written & saved to the PC when Kaspersky was set to interactive mode. > I set Kaspersky to basic mode an

Re: [Flexradio] New Flex 3000 - RF Issues

2009-06-20 Thread Dan Eisenman
Hi Harold; I fell your pain ! Couple of suggestions, suggestion one is try it with a dummy load if it is working then it is probably RF coming back down the antenna coax , this is a common problem with many antenna types and certainly with OCFD type antennas . I know because I have that p

[Flexradio] Flex-3000 and PACTOR-III?

2009-06-20 Thread Gary Strong
I have had my Flex-3000 for a few weeks now and am extremely pleased with it. No setup issues, and the new PowerSDR release 1.18.1 is fantastic! Question: Has anyone successfully tried using PACTOR-III with the Flex 3000 or 5000? I have an SCS PTC-IIex modem that I have been using with an Icom 7

Re: [Flexradio] New Flex 3000 - RF Issues

2009-06-20 Thread Brian Lloyd
On Sat, Jun 20, 2009 at 5:43 AM, Harold Rosee wrote: > So, what do I do?  This isn't going to work as it is.  Do I have to have a > dedicated computer > not hooked to anything else to make it work?  Not sure that is worth the > trouble or going to > happen at my shack.  I did put a choke at the c

Re: [Flexradio] PowerSDR1.18.1 startup error

2009-06-20 Thread Steve Kallal
My day job is .NET application development. There is a free tool from Red Gate called the .NET Reflector, found at http://www.red-gate.com/products/reflector/, which disassembles the IL code in an assembly. PA19.dll is NOT .NET assembly according to the Reflector utility. It does not contain a CLI

Re: [Flexradio] New Flex 3000 - RF Issues

2009-06-20 Thread Simon (HB9DRV)
FWIW I have problems on 15m with my wireless mouse. Simon Brown, HB9DRV www.ham-radio-deluxe.com - Original Message - From: ...wireless usb keyboard and mouse... ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.fle

Re: [Flexradio] All using SVN 3166 or higher

2009-06-20 Thread Jack Haverty
Tim said it better than I could -- it's the overall system configuration that can be helpful to determine what is and is not experimental. I run VAC 409 full - not demo. This is a released version of VAC, and seems to be implicitly approved by Flex because it is discussed in the Knowledge Base.

[Flexradio] Flex 5000 orientation

2009-06-20 Thread Brian Lloyd
It has been awhile and there seem to be a number of new Flex 5000 owners on here. I thought I would throw out some of my logic for orienting the F5K in the shack. The F5K has six approximately-equal sides but only two hold much interest. One has three things: the mic connector, the headphone connec

Re: [Flexradio] Flex 5000 orientation

2009-06-20 Thread Geep Howell
Woe is us who have to suffer with the new RED light... On Jun 20, 2009, at 12:12 PM, Brian Lloyd wrote: One other advantage of this orientation is that the Blue Light Of Death illuminates the wall giving a very pleasing, high-tech, back-lit effect

Re: [Flexradio] Flex-3000 and PACTOR-III?

2009-06-20 Thread Brian Lloyd
On Sat, Jun 20, 2009 at 8:30 AM, Gary Strong wrote: > > I have had my Flex-3000 for a few weeks now and am extremely pleased > with it.  No setup issues, and the new PowerSDR release 1.18.1 is > fantastic!  Question: Has anyone successfully tried using PACTOR-III > with the Flex 3000 or 5000?  I h

[Flexradio] Blue light

2009-06-20 Thread STORMYX
Gives new meaning to "RED LIGHT DISTRICT"! Leon, N5PU PS It is a bright red! Woe is us who have to suffer with the new RED light... On Jun 20, 2009, at 12:12 PM, Brian Lloyd wrote: > One other advantage of this orientation is that the Blue Light Of > Death illuminates the wa

[Flexradio] Fw: Extra 6 M Preamp....

2009-06-20 Thread Pete M
I have an extra 50 Mhz... specially designed to use the preamp loop of the Flex 5000a. It is a Very low Noise Figure (.61dbnf) and Medium Gain (12.37dbg) so it will make 6 meters come alive without overload. I am using one and it helps considerably. $75 + Shipping. Thanks, Pete WA

Re: [Flexradio] Flex 5000 orientation

2009-06-20 Thread Brian Lloyd
On Sat, Jun 20, 2009 at 9:18 AM, Geep Howell wrote: > Woe is us who have to suffer with the new RED light... They went with red? Oh. Well, if you are into the whole dark, Goth, vampire, blood thing that seems to be popular with the younger set, (after all, we do rise at sunset to work DX on the l

[Flexradio] Flex3000 / Remote / Vac / Ipsound

2009-06-20 Thread jmbord
Hi , Has anyone experienced to run a flex3000 remote by using for voice the VAC with the two virtual audio cables 'connected' as input/output devices of ipsound ?. If yes please drop me a mail direct please. I am successfull in getting this kinda setup work with a microkeyer II and my 756p3 b

[Flexradio] V1.18.1

2009-06-20 Thread jmbord
The new 'official' release is working like a charm here, thanks for the job ! Jean-marc F1HDI PS By the way there is a small trick to avoid having to plug an external audio amplifier with loudspeaker at the back of the flex3000 when you use it with your favorite laptop. Just activate the Va

Re: [Flexradio] Flex-3000 and PACTOR-III?

2009-06-20 Thread Gary Strong
Brian: Thanks. The Flex-3000 has a "FlexWire" Bus jack on the back, whose pin-out table in the manual shows that it has a "line-in" (pin 2) and "line-out" (pin 9). (There is also a separate PTT jack on the back. But, I suspect your suggestion of making Airmail do PTT with a separate virtual com p

Re: [Flexradio] Flex-3000 and PACTOR-III?

2009-06-20 Thread Brian Lloyd
On Sat, Jun 20, 2009 at 10:14 AM, Gary Strong wrote: > Brian: > Thanks.  The Flex-3000 has a "FlexWire" Bus jack on the back, whose > pin-out table in the manual shows that it has a "line-in" (pin 2) and > "line-out" (pin 9).  (There is also a separate PTT jack on the back. > But, I suspect your su

Re: [Flexradio] PowerSDR1.18.1 startup error

2009-06-20 Thread Bob McGwier
That is interesting. In the IDE (VS2008) it is set to .NET 3.5 and is somehow marking it as needing .NET 3.5 even though it is not actually using it. Thanks for pointing this out, it will be investigated. In the slightly longer term, this will become a moot point. PrettyBetty IS a CLI bas

Re: [Flexradio] Flex-3000 and PACTOR-III?

2009-06-20 Thread Ray Andrews, K9DUR
Gary, Do NOT confuse the "Line In" and "Line Out" pins on the FlexWire connector with any type of audio signals. They are communications lines for a firewire-type communications port. The FlexWire connector is for communicating with 3rd-party peripherals, such as the Universal Controller Board (

Re: [Flexradio] Flex-3000 and PACTOR-III?

2009-06-20 Thread Brian Lloyd
On Sat, Jun 20, 2009 at 11:17 AM, Ray Andrews, K9DUR wrote: > Gary, > > Do NOT confuse the "Line In" and "Line Out" pins on the FlexWire connector > with any type of audio signals.  ... > Bottom line:  The FlexWire connector does NOT provide access to any analog > audio signals, either TX audio or

Re: [Flexradio] Flex-3000 and PACTOR-III?

2009-06-20 Thread Ray Andrews, K9DUR
Brian, I apologize. Your are correct. I leapt without looking at the manual. I did not realize that Flex had included the audio in/out lines on the FlexWire connector. Oops! 73, Ray, K9DUR ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.b

Re: [Flexradio] Flex-3000 and PACTOR-III?

2009-06-20 Thread Brian Lloyd
On Sat, Jun 20, 2009 at 11:42 AM, Ray Andrews, K9DUR wrote: > Brian, > > I apologize.  Your are correct.  I leapt without looking at the manual.  I > did not realize that Flex had included the audio in/out lines on the > FlexWire connector.  Oops! No worries. Now if only they have put PTT there as

Re: [Flexradio] Flex-3000 and PACTOR-III?

2009-06-20 Thread Tim Ellison
We were running a Pactor demo @ Dayton on FLEX-3000 using the Flexwire interface, so it does work. -Tim Sent from my iPhone On Jun 20, 2009, at 3:07 PM, "Brian Lloyd" wrote: > On Sat, Jun 20, 2009 at 11:42 AM, Ray Andrews, > K9DUR wrote: >> Brian, >> >> I apologize. Your are co

[Flexradio] 1.18.1 Audio Limiting

2009-06-20 Thread Frank Mayer
Audio limiting on AM and SAM receive very evident in the new release, just like it was in the previous release 1.18.0 with the SDR-1000. This issue started with the SVN test branch, SVN 2797 when the changes were made to the AGC. Frank, WA3JBT ___ Fl

Re: [Flexradio] Flex 5000 orientation

2009-06-20 Thread Jim Barber
I put my 5K in a cabinet with the power supply just to hide the not-so-little LRL. (I didn't really do it for that purpose, but hey - it fits the story line) Using the rear-panel balanced mic input and having the radio fan and linear PS mechanical hum all bottled up is a good thing. I need to

[Flexradio] 6 meter preamp

2009-06-20 Thread N4PY2
What are people using for a good 6 meter preamp on the Flex-5000A? On a related issue, I use a beverage and currently have it connected to RX1 in. If I add a 6 meter premap and then use rx1 in and rx1 out to connect it, I thought I could then use Ant 1 or Ant 2 for my beverage. (I am using An

Re: [Flexradio] 6 meter preamp

2009-06-20 Thread Bob Tracy
Carl, Check to see if the "Lock" checkbox on the antenna form is checked. 73, Bob, K5KDN -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of N4PY2 Sent: Saturday, June 20, 2009 2:56 PM To: flexradio@flex-radio.biz Subject: [Fl

[Flexradio] FW: 6 meter preamp

2009-06-20 Thread Ed White WA3BZT
I use a WA2ODO 6 meter pre amp works great. Ed WA3BZT What are people using for a good 6 meter preamp on the Flex-5000A? On a related issue, I use a beverage and currently have it connected to RX1 in. If I add a 6 meter premap and then use rx1 in and rx1 out to connect it, I thought I coul

Re: [Flexradio] 1.18.1 Audio Limiting

2009-06-20 Thread Frank Mayer
A point of interest. I am able to stop this audio limiting effect on AM by reducing the AGC-T control from the nominal setting of 90 to 60 and below, depending on the strength of the RX signal. This was unnecessary previously in 1.16.2 and earlier. - Original Message - From: Frank

Re: [Flexradio] headsets

2009-06-20 Thread Harry Hahn
I use two different headsets. If you want to go wireless, Cobra makes one for cell phones with a single muff and a NC boom mike. It is Bluetooth, so you use VAC on your PC with the Bluetooth on your PC. If your PC doesn't have Bluetooth, but a USB Bluetooth phob. The other one I use is the Mic

Re: [Flexradio] FW: 6 meter preamp

2009-06-20 Thread Geep Howell
Turn on the expert mode on the antenna page?? I think I read someplace that you can mix and match that way. On a related issue, I use a beverage and currently have it connected to RX1 in. If I add a 6 meter premap and then use rx1 in and rx1 out to connect it, I thought I could then use

Re: [Flexradio] Flex-3000 and PACTOR-III?

2009-06-20 Thread Tim Ellison
I will have a detailed "how to" for setting up Pactor on the FLEX family of SDRs posted in the Knowledge Center later this weekend. I am in the final stages of collecting the graphics and info. -Tim -Original Message- From: Tim Ellison Sent: Saturday, June 20, 2009 3:31 PM To: Brian

Re: [Flexradio] 1.18.1 Audio Limiting

2009-06-20 Thread Tim Ellison
Look like you found the fix. The AGC was improved in the 1.18.x releases so this making this parameter change is very reasonable. -Tim -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Frank Mayer Sent: Saturday, June 20

Re: [Flexradio] [SPAM] 6 meter preamp

2009-06-20 Thread Tim Ellison
This will help you out, Carl. http://kc.flex-radio.com/KnowledgebaseArticle50385.aspx -Tim -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of N4PY2 Sent: Saturday, June 20, 2009 3:56 PM To: flexradio@flex-radio.biz Subject:

[Flexradio] Powering PW-1 Amp?

2009-06-20 Thread Howard S. White
Anyone have any experience wiring up a PW-1 to a Flex5000A? If you own a PW-1 you know that it powers on automatically into antenna switching mode (without turning on) when you power up your Icom radios attached to it. I am about to connect my new Flex5000 to a PW-1 as Exciter2 I am running it i

[Flexradio] Fw: Powering PW-1 Amp?

2009-06-20 Thread Dave
That is how I wired mine (+13.8 V from Flexwire to PW-1 ACCY connector). I have an older PW-1 that does not power up the antenna switch & tuner from the radio 13.8 volts. Mine is running great and I suggest you run Steve Nance's DDUtil and enable auto drive to limit power out of the Flex to the

[Flexradio] Fwd: Flex-3000 and PACTOR-III?

2009-06-20 Thread Stephen Hicks, N5AC
Attached are some of the instructions ... additionally I was using 96kHz with a 2048 buffer in the driver as I recall ... the 512 was just set for DIGU mode I think (not 100% sure here). I uploaded the cable specs, but it did not make it through the reflector so Tim is going to post these in the k

[Flexradio] More on RFI issues

2009-06-20 Thread Harold Rosee
Thanks for all the replies about my RFI issue. I basically rebuilt the shack and left a lot of stuff off the computer. Same problem, computer locks up with transmit power. I tried on a dummy load and it works fine. I then moved the radio to a different place and rerouted the cables and s

Re: [Flexradio] Windows 7 beta - Flex firewire driver defaults to48000 solved

2009-06-20 Thread Dave Gomberg
At 08:33 6/20/2009, Brian Lloyd wrote: If you use a dedicated computer to run PowerSDR, turn off the unnecessary processes, put it behind a proper firewall, and then don't surf the web, get email, or watch videos, you don't need antivirus software. Actually, mine doesn't have any internet conne

Re: [Flexradio] More on RFI issues

2009-06-20 Thread Steven O'Neal
Harold Before you give up completely, a few questions. " I have the shack grounded with a 1 inch strip of copper reuuning to all in the shack." How long is the run, and what do you have it attached to at the ground end? Are you sure the point where you have attached to ground is solid? A gr

Re: [Flexradio] 1.18.1 Audio Limiting

2009-06-20 Thread Frank Mayer
It's not really a "fix". It requires constant adjustment of the AGC-T and/or Preamp level to avoid the limiting effect on AM depending on the strength of the signal. - Original Message - From: "Tim Ellison" To: "Frank Mayer" ; Sent: Saturday, June 20, 2009 5:06 PM Subject: RE: [Fl

Re: [Flexradio] Flex-3000 and PACTOR-III?

2009-06-20 Thread Gary Strong
I got all of it to work, EXCEPT audio in to TX from the FlexWire, and I have been beating myself up about why this isn't occurring until I saw Stephen Hicks' email saying you have to open the mixer and select audio input from the FireWire. I'll try it again that way, but all else seems to work (PT

[Flexradio] Would like to try a Griffin Powermate

2009-06-20 Thread NZ8J
I've had the Flex 5000A for a month and a half or so and would like to give a Griffin Powermate a try. If someone has one for sale that they tried and didn't care for I'd be interested in purchasing it. If so please send details such as model, condition and price shipped priority mail to zip 45324.

Re: [Flexradio] More on RFI issues

2009-06-20 Thread George Steube
Harold, I run 1.5kw with a flex and about six usb/serial connections and straight serial connections. The bottom line is there is no free lunch. It will take some effort to track down the RF problems, but in my opinion it is worth the effort. Grounds aren't going to do it. You need to add eithe

Re: [Flexradio] More on RFI issues

2009-06-20 Thread Howard S. White
Harold: I agree ... no free lunch... I have a Icom IC-756PRO3 connected to a PW-1. When I decided to use it for contesting (several years ago), I connected it to my contest computer. Voila, all sorts of RFI issues..The computer as well as several others in the shack would crash. Like George sai

Re: [Flexradio] More on RFI issues

2009-06-20 Thread Neal Campbell
Harold, One thing I would try is to strip all devices connected to your computer except the keyboard, mouse and the flex. Try your transmit test, If it locks your machine, then you have rfi coming thru those devices. If it doesnlt lock, keep putting one device at a time back connected to your comp

Re: [Flexradio] More on RFI issues

2009-06-20 Thread Tim (W4TME)
These are the split ferrite beads Neal is referring to. Mix31. Good stuff. http://www.dxengineering.com/products.asp?ID=182 -Tim --- W4TME FlexRadio Systems - Info Management Admin. "Tune in Excitement" On 6/20/2009 9:13 PM, Neal Campbell wrote: Harold, One thing I would try is to strip all

Re: [Flexradio] Fwd: Flex-3000 and PACTOR-III?

2009-06-20 Thread Gary Strong
The mixer setting for FlexWire made the difference, and I got TX as well as RX. TX certainly works since the called PMBO answers me. I can see a nice strong signal on the reply, but no joy in establishment of a connection. I think the latency may be a tad long even with 512 buffers. I tried bot

Re: [Flexradio] Fwd: Flex-3000 and PACTOR-III?

2009-06-20 Thread Stephen Hicks, N5AC
You can "force it" by setting the long path in Airmail, but I would try lowering the buffers in the driver (through control panel) Steve Sent from Steve's iPhone On Jun 20, 2009, at 20:35, "Gary Strong" wrote: The mixer setting for FlexWire made the difference, and I got TX as well as RX.

Re: [Flexradio] More on RFI issues

2009-06-20 Thread Ray Andrews, K9DUR
Harold, Your symptoms indicate that the RFI is getting into the PC via the firewire cable, causing the driver to lose communications with the rig. These are the same symptoms I experienced. I had a stubborn RFI problem on all bands when running my amplifier with my Gap Titan DX antenna, but not

[Flexradio] 6 Meter Preamps

2009-06-20 Thread Larry Savage
There are a number of candidate preamps for 6 metersI have detailed three of these 1) Advanced receiver (www.advancedreceiver.com) part number = P50VDG (my choice for 6 only).has BNC connectors2) Elecraft (www.elecraft.com) partnumber = PR6 has BNC connectors3) Minicircuits (www

Re: [Flexradio] More on RFI issues

2009-06-20 Thread Bret Mills
Did you try the Balun and 1:1 choke at the antenna suggested earlier, (6 turns of about 6 inches diameter COAX taped tightly together) The problem is RF in the shack, Get the RF out of the shack and your problems will more then likely be gone, using the dummy load proved that your station (Radio a

Re: [Flexradio] More on RFI issues

2009-06-20 Thread Lee A Crocker
RFI issues are generally a common mode issue on the feedline of the antenna. Next your ground should be a star ground not a pipe or strap running around the shack. It doesn't matter if its 6 inches wide if the ground is a high impedance it is not a ground. Actually strap looks pretty but it

Re: [Flexradio] 6 Meter Preamps

2009-06-20 Thread Jim R
All I have been searching for a 6 meter preamp and have been considering the ARR P50 VDG. It has 24db gain and a low noise figure (.5db). When this subject came up over a year ago, I seem to remember someone mentioning that 10db is just about right, but I may be mistaken. Does anyone know if

[Flexradio] Why An Extra Pre Amp On Six Meters

2009-06-20 Thread Dan Eisenman
I have been using my 5000A on six meters , seems to work great as is , I have been reading about the 3000 not needing a Pre Amp but adding one on the 5000A. Just curious if any real lab test were run to confirm this data ? The 5000A seems fine to me , I don't seem to have any trouble hearing

Re: [Flexradio] Why An Extra Pre Amp On Six Meters

2009-06-20 Thread Clay W7CE
Without a preamp, you haven't been hearing the weak ones. Assuming that your local noise level isn't incredibly high, the stations that sound weak without a preamp, won't sound weak with it. The stations that sound weak with the preamp on, are non-existant without it. I've measured the 6M noi