[TenTec] How to Choose an SDR RX for the Pan-Adapter?
Rick - DJ0IP / NJ0IP
Rick at DJ0IP.de
Thu Dec 25 08:42:56 EST 2014
Thanks. That is useful data.
Actually I would prefer to have a receiver with a built-in soundcard.
This is what's appealing about the FiFi or Watson solution.
REASON: I only have a laptop in the ham shack and I doubt it's sound card
is very good.
And, the audio cables exit the side near the front. That would be in the
way, big time.
I would prefer to have just a USB cable to the back of the laptop.
I hope to make a table of technical requirements so that I can compare these
That is easy enough for me with yesterday's receivers.
I have no idea what is important in these SDR receivers.
Yes, the Watson does look interesting.
I'm not sure where it is actually built. Probably China.
WiMo here in DL is selling one that looks exactly the same but with a
73 - Rick, DJ0IP
(Nr. Frankfurt am Main)
From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of Carl
Sent: Thursday, December 25, 2014 1:55 PM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] How to Choose an SDR RX for the Pan-Adapter?
I actually think the Softrock Ensemble III will do everything you need.
It will give you 48 khz of spectrum with your existing sound card.
You will be able to see the transmit bandwidth of stations, find station and
click on them. The biggest thing you will be missing is there's no coverage
above 30 mhz. The weakest point is the displayed spectrum will use your
sound card and not unless you upgrade your sound card will be limited to 48
khz. But actually 48 khz is enough.
In my opinion the main use is to quickly find stations and assess band
activity at a glance. If there's only 3 stations on a band, it's nice to
see where they all are and just click on each one to see what is going on.
Carl Moreschi N4PY
58 Hogwood Rd
Louisburg, NC 27549
On 12/25/2014 6:16 AM, Rick - DJ0IP / NJ0IP wrote:
> In fact it would help even more if I knew what I want out of a panadapter!
> Probably the most interesting use would be to see the transmitted
> spectrum of stations on the band.
> If I hear broad splatter, it would be nice to easily see where its
> coming from and see just how broad it is, compared to other signals.
> Same for key clicks.
> It would be nice to look at my own signal and see how broad it is, if
> it is flat topping on peaks, etc.
> Looking for empty frequencies to call CQ on is not very high on my
> list of needs.
> Watching boring waterfalls is not high on my list either.
> But you bring up an excellent point, Barry.
> I don't even know what all it can do.
> I would like to see a features list showing all of the uses of a
> I don't need a big explanation for each, I just would like to see a
> list of things one can do with a pan-adapter.
> If I understood Jim correctly, you need a pretty expensive solution in
> order to be able to make accurate measurements with it. He indicated
> he can do that on his K3 with Elecraft pan-adapter. That's not on the
> plan here for the moment.
> Thank you for the comment.
> 73 - Rick, DJ0IP
> (Nr. Frankfurt am Main)
> -----Original Message-----
> From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of Barry
> Sent: Thursday, December 25, 2014 11:58 AM
> To: Discussion of Ten-Tec Equipment
> Subject: Re: [TenTec] How to Choose an SDR RX for the Pan-Adapter?
> Rick, I think it would help if folks knew what precisely you want out
> of the panadapter. They potentially offer lots of bells and whistles,
> but many/most might not be of interest to YOU.
> 73, Barry N1EU
> On Thu, Dec 25, 2014 at 10:30 AM, Rick - DJ0IP / NJ0IP<Rick at dj0ip.de>
>> This topic in similar form has been covered in many different threads
>> here and in the other TT groups.
>> I want to add an external pan-adaptor to my older Eagle. My Eagle
>> has no 9 MHz out and also has no TMP jack on the filter board for
>> tapping into the IF.
>> WHAT I AM LOOKING FOR:
>> 'Specific information' about how to compare the technology of the
>> various receiver candidates.
>> WHAT I AM 'NOT' LOOKING FOR:
>> Comments like: "I've had good luck with XYZ".
>> Besides being an almost useless comment, we've read those types of
>> comments multiple times already.
>> Although my Eagle has no easy provision for 9 MHz out, it does have
>> the 2-jack mod which routes the transmitting antenna out the back
>> panel, AFTER the signals have passed through the Eagles RX BPF's. I
>> suppose this eliminates the need for BPFs in the External RX, but it
>> is probably better to have them anyway, so that I can also use the RX
>> as a
>> My personal interests stop at 30 MHz, but in the interest of
>> completeness and learning, if there are benefits in the various
>> technologies above that, say up to 70cm, then please share them with
>> It will be FAR EASIER for me to simply use the ANT OUT line on my
>> Eagle than trying to tap into the 9 MHz.
>> I'm not afraid of using a soldering iron, but the Eagle is very tiny
>> and my eyesight is very poor.
>> Unless there are some darn good arguments for an IF connection, I
>> will use the ANT OUT.
>> THE BIG QUESTION IS: JUST HOW GOOD DOES THE EXT RX NEED TO BE?
>> Remember, I wish to do this on a shoestring budget, but maximize my
>> bangs for the buck.
>> I have read suggestions for:
>> * Softrock Ensemble III
>> * FiFi (a German RX costing abt. $165 in kit form)
>> * SDR-4 (an English RX costing abt. $300)
>> * LP-Pan
>> * Fun Cube
>> * Watson W-SDRX1 (my own suggestion; is also available locally under
>> another name for $110)
>> IN SUMMARY:
>> How do I compare and evaluate these candidates?
>> I am interested in things like on-board technology, and ease of
>> I wish to keep it simple and I have zero interest in installing Ham
>> Radio Deluxe or any similar over-kill product.
>> I do have N4PY control software for my Eagle.
>> Though I'm looking for a cheap solution, I am not looking for the
>> cheapest solution. If I can get advantages for spending an extra
>> $50, then I would probably do that.
>> Thanks in advance for technical information on this topic.
>> 73 - Rick, DJ0IP
>> (Nr. Frankfurt am Main)
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