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Re: 9v1al motherboard V3.6

 

I have the 6 files, all quite large so I shall send them on in separate emails later this evening.
73 ... Sid.

On 09/03/2021 16:37, John wrote:
The builder's notes are not in Files anymore; does anyone have them?

Thanks 73 John VE3NFK (I have an unbuilt kit)



--
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Senior Staff Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks
--
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Senior Staff Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks
Re: 9v1al motherboard V3.6

 

The builder's notes are not in Files anymore; does anyone have them?
John

There is this

Were they in the Files section? They should have been duplicated in the transfer.
I think the Mobo also had their own group, do not know if still current.... Looks like it

73 Alan G4ZFQ
Re: 9v1al motherboard V3.6

 

I am also looking for them, thanks, Paul K0ZYV
Re: RD16HHF1 source?

 

Arrow's Varical is a Mitsubishi distributor and should have them.
But (there always is one) usually will only sell in the smallest factory pkg.
IIRC the RD06 minimum was 34 pieces.
73, -Bob ah7i
9v1al motherboard V3.6

 

The builder's notes are not in Files anymore; does anyone have them?

Thanks 73 John VE3NFK (I have an unbuilt kit)
Re: HSDR Output

 

Hi Howard,

No, I have not heard from the company yet. I may start inquiring to find out the status.

I shall let you know asap.

Regards

Ed.

On 3/8/2021 3:31 PM, Howard Fidel wrote:
Hi Ed:
Just following up with you to see if you have gotten your Odroid N2+ and checked out its operation.

Thanks,
Howard
Re: HSDR Output

 

Hi Ed:
Just following up with you to see if you have gotten your Odroid N2+ and checked out its operation.

Thanks,
Howard
W9SZ, Zack. Microwave Contest Winner 2020

 

Hello All,
Just to let group know, Zack W9SZ had an exceptional showing in the SE VHF 2020 Fall Sprint Contest as a microwave rover. Making amateur microwave equipment work on a bench or in the shack is one thing. Traveling all over portable for rover operation is another level of making things work!

Because of this Zack gets to keep the Orange Klystron Award (see photo) in his shack until next year's winner gets it. If Zack wins Fall 2021 then it will stay with him another year.

73 Bruce Randall NT4RT, VHF Fall Sprint contest chairman.
Re: antenna question

 

On 14/02/2021 22:17, JonI via groups.io wrote:
I'm using a 30' long attic dipole isn't doing so well and looking for upgrade suggestions.? To save costs, I'd like to homebrew a better antenna.
Generally speaking attic antennas will pick up more noise than outdoor antennas so I would not expect the SNR to be as good.

But I would have thought your attic dipole would be receiving plenty of stations, provided it is matched to whatever feeder you are using on the bands of interest.

How exactly is your attic dipole connected to the Softrock?

What bands are you using?

73
Nick
Re: antenna question

 

However, the antenna I'm using, a 30' long attic dipole isn't doing so well and looking for upgrade suggestions.
The Softrocks need good TX-type antenna.
With any antenna the first question is whether on the frequency of interest does the noise level increase when you connect the antenna?

If not a preamp may help. If noise increases then you need a quieter antenna or different location.
I'm not an expert but indoors is likely to be worse.

The input of preamps is designed for its use. A wire or loop would need different matching.

Most electronics are rated to work at high temperatures, I would not worry about that unless run close to maximum dissipation.

Nano VNAs are good but in my opinion are not the answer to your problem.

73 Alan G4ZFQ
Re: antenna question

 

A TinySA and a NanoVNA are extremely useful bits of technology. I have
both and they are great.

Dave
W2IJL

On Sun, Feb 14, 2021 at 5:41 PM Charles Webb via groups.io <kc1enn=
[email protected]> wrote:

O.O Nothing I would not suggestion to anyone/everyone. Sharing my own
up hill climb and fun, rank novice amateur ongoing experience. It is all
good. :)
Charles/KC1ENN

On Sunday, February 14, 2021, 5:34:12 PM EST, G8DQX list <
list@...> wrote:

Seem to have gone to the list!

On 14/02/2021 22:22, Charles Webb via groups.io wrote:
Private not public reply.
Re: antenna question

 

O.O? Nothing I would not suggestion to anyone/everyone.? Sharing my own up hill climb and fun, rank novice amateur ongoing experience.? It is all good.? :)
Charles/KC1ENN

On Sunday, February 14, 2021, 5:34:12 PM EST, G8DQX list <list@...> wrote:

Seem to have gone to the list!

On 14/02/2021 22:22, Charles Webb via groups.io wrote:
Private not public reply.
Re: antenna question

 

Seem to have gone to the list!

On 14/02/2021 22:22, Charles Webb via groups.io wrote:
Private not public reply.
Re: antenna question

 

Private not public reply.? Invest in an inexpensive NanoVNA and tune your antennas.? Amazing learning tool and improvements in my low power projects.? Ebay/Amazon.
Charles

On Sunday, February 14, 2021, 5:17:53 PM EST, JonI via groups.io <ji425bt@...> wrote:

The softrock has been up and running for over a week now thanks in large
part to group tips.? However, the antenna I'm using, a 30' long attic
dipole isn't doing so well and looking for upgrade suggestions.? To save
costs, I'd like to homebrew a better antenna.

Years ago, when I did my Jupiter listening, I had a dual dipole set up
at 20 Mhz outdoors with a coax preamp.? The antenna did pretty well, not
just for Jupiter but most of the HF. Unfortunately, budget and space
restrictions mean I can't erect something like this again at the current
time.

I still have the preamp, based on a Mar6 or MRF901.? I no longer have
the length of coax I used at the time, nor the wire for the dipole.? I
do have a very old quantity of RG-8 that can't really be used for
anything anymore.

A possible thought was using the RG-8 for a one meter loop antenna with
the preamp directly at the base.? Only issue is attic heat.? In the
summer, it would likely damage the preamp.? Another thought is just
using the loop indoors close to where I have the softrock.

Anyway, your thoughts would be welcome here.
antenna question

 

The softrock has been up and running for over a week now thanks in large part to group tips.? However, the antenna I'm using, a 30' long attic dipole isn't doing so well and looking for upgrade suggestions.? To save costs, I'd like to homebrew a better antenna.

Years ago, when I did my Jupiter listening, I had a dual dipole set up at 20 Mhz outdoors with a coax preamp.? The antenna did pretty well, not just for Jupiter but most of the HF. Unfortunately, budget and space restrictions mean I can't erect something like this again at the current time.

I still have the preamp, based on a Mar6 or MRF901.? I no longer have the length of coax I used at the time, nor the wire for the dipole.? I do have a very old quantity of RG-8 that can't really be used for anything anymore.

A possible thought was using the RG-8 for a one meter loop antenna with the preamp directly at the base.? Only issue is attic heat.? In the summer, it would likely damage the preamp.? Another thought is just using the loop indoors close to where I have the softrock.

Anyway, your thoughts would be welcome here.
Re: free HDSDR CW decoder?

 

Thanks, guys.? I'm going to try MultiPSK first since it looks like the easiest one to set up.? I should have mentioned that the PC never goes online so hope that doesn't cause program issues.

On 2/14/21 3:35 PM, Roger wrote:
If I recall correctly, both FLdigi and MultiPSK can be used with HDSDR and a SoftRock RX to decode CW.


On Feb 14, 2021, at 11:57 AM, JonI via groups.io <ji425bt@...> wrote:

Just wondering if there was any way to freely decode CW with HDSDR and Softrock RX Ens II? If something other than HDSDR can do it and also free, please share. Thank you.
Re: free HDSDR CW decoder?

 

I use FLdigi to decode CW.

On Sunday, February 14, 2021, 2:57:56 PM EST, JonI via groups.io <ji425bt@...> wrote:

Just wondering if there was any way to freely decode CW with HDSDR and Softrock RX Ens II?? If something other than HDSDR can do it and also free, please share.? Thank you.
Re: free HDSDR CW decoder?

 

If I recall correctly, both FLdigi and MultiPSK can be used with HDSDR and a SoftRock RX to decode CW.

On Feb 14, 2021, at 11:57 AM, JonI via groups.io <ji425bt@...> wrote:

Just wondering if there was any way to freely decode CW with HDSDR and Softrock RX Ens II? If something other than HDSDR can do it and also free, please share. Thank you.
free HDSDR CW decoder?

 

Just wondering if there was any way to freely decode CW with HDSDR and Softrock RX Ens II? If something other than HDSDR can do it and also free, please share. Thank you.
Re: The PE64904 chip

 

Hi Shirley,

I had exactly the same thought and also wondered at the 3.3V limit which, if I calculate correctly is about 14-15 dBm in a 50 ohm system. The impedance and the voltage could be much higher in a crystal filter. Two possible mitigations occur to me. First start out with a few poles of a passive filter that is as wide as the widest bandwidth and follow it with a variable filter to reduce the bandwidth even further then the passive filter would bear the brunt of strong off-frequency signals. The other idea is to use as high a frequency as possible, 20 MHz or higher if you can find fundamental crystals higher. At the higher frequencies the crystal impedances are lower so the voltages will be as well.

73,
Jim WA2EUJ
901 - 920 of 89293