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Search: Posts Made By: hertzian
Forum: Receive Antennas (below 30MHz) Today, 4:27 PM
Replies: 27
Views: 925
Posted By hertzian
Re the static zap: Makes sense not to zap the...

Re the static zap: Makes sense not to zap the antenna, especially during winter conditions.

I zapped my CCrane SSB to the point where I just needed to power-cycle the radio to get audio back.
...
Forum: HF/MW/LW Equipment Yesterday, 11:50 PM
Replies: 35
Views: 7,094
Posted By hertzian
I'm done with audio! No real surprise, but...

I'm done with audio!

No real surprise, but today ran a small coaxial audio cable with an rca connector to one of those vastly overpriced desktop speakers. The HF3 had no problem driving a Yaesu...
Forum: Receive Antennas (below 30MHz) Yesterday, 5:35 PM
Replies: 27
Views: 925
Posted By hertzian
Hi Bob - maybe this will help ... In my...

Hi Bob - maybe this will help ...

In my excitement to test the 23 foot reel-up, the first thing I did was hook it up backwards. That is, I clamped on the clip that serves as a mounting clip with...
Forum: Home Audio / Theater Yesterday, 4:53 AM
Replies: 12
Views: 2,901
Posted By hertzian
Need more cowbell!

Hah - another demonstration of the ear-protection the K240 provides about knocking off the leading edge of high frequency super fast transients ....

Us older rockers might remember Procol Harum's...
Forum: HF/MW/LW Equipment Yesterday, 3:38 AM
Replies: 14
Views: 375
Posted By hertzian
I put more info in this thread: ...

I put more info in this thread:
https://forums.radioreference.com/hf-mw-lw-equipment/360588-ccrane-skywave-w-ssb.html

Remember, this radio is just slightly larger than your palm. Expecting an...
Forum: HF/MW/LW Equipment Yesterday, 3:36 AM
Replies: 14
Views: 375
Posted By hertzian
It is a shame that many have not heard the...

It is a shame that many have not heard the difference between superb audio intelligibility, and not just mere frequency response shaping that some of the higher end gear had back in the day.

If...
Forum: HF/MW/LW Equipment Yesterday, 3:17 AM
Replies: 19
Views: 6,152
Posted By hertzian
Re: the external antenna (or lack thereof) and...

Re: the external antenna (or lack thereof) and claims of poor sensitivity:

It isn't really necessary for this palm-sized unit, but it does come with the 23-foot reel-up type that you can clip on...
Forum: HF/MW/LW Equipment Yesterday, 3:05 AM
Replies: 19
Views: 6,152
Posted By hertzian
Mabye I can help. Keep in mind this is a...

Mabye I can help. Keep in mind this is a palm-size radio for the most part.



Nope - no longwave.



AM / SW / AIR:
6 / 4 / 3 / 2 / 1
Forum: Amateur Radio Equipment Yesterday, 2:22 AM
Replies: 6
Views: 2,091
Posted By hertzian
I don't remember where I found it, but waaay back...

I don't remember where I found it, but waaay back I was reading how about *some* of the 13.8v DC cable pins for my 2000 were not actually making good contact with each other, and the resultant quick...
Forum: HF/MW/LW Equipment 12-09-2018, 4:02 AM
Replies: 14
Views: 375
Posted By hertzian
Sounds great on AM, but I have to bring this up...

Sounds great on AM, but I have to bring this up about source quality ...

Stations, both domestic and shortwave, that seem to take pride in their signal audio quality sound just fine.

However,...
Forum: HF/MW/LW Equipment 12-08-2018, 7:04 AM
Replies: 14
Views: 375
Posted By hertzian
In my case, two receivers that I've own/ed have...

In my case, two receivers that I've own/ed have the desirable "it factor" when it comes to audio clarity that goes beyond mere frequency response:

Commradio CR1a
CCrane Pocket / Skywave / Skywave...
Forum: HF/MW/LW Equipment 12-07-2018, 4:14 PM
Replies: 14
Views: 375
Posted By hertzian
It's all about audio recovery

Wow - great find, thanks for bringing that up.

The matter is not so much a "dsp thing", as it is audio recovery. The customers for those radios usually spent long hours behind the dial, but not...
Forum: HF/MW/LW Equipment 12-05-2018, 1:14 AM
Replies: 64
Views: 3,793
Posted By hertzian
Bearcat DX 1000 VFO

Wow - check out the old-school VFO in the 1000: like my HF3, it is a simple photodiode encoder with a weighted shaft:

https://www.youtube.com/watch?v=NjSWkHQAAVk

I've never put my hands on...
Forum: HF/MW/LW Equipment 12-04-2018, 10:35 PM
Replies: 2
Views: 250
Posted By hertzian
Much of that has been covered here, but I'll try...

Much of that has been covered here, but I'll try to be brief:

https://forums.radioreference.com/hf-mw-lw-equipment/360588-ccrane-skywave-w-ssb.html



Yes to both. But don't expect miracles...
Forum: HF/MW/LW Equipment 12-03-2018, 8:03 PM
Replies: 35
Views: 7,094
Posted By hertzian
Improved the audio again

Without any real schematic or service manual, I did the unthinkable:

Shot-gunned the rest of the electrolytic caps near the audio amp with non-polarized types. So basically I replaced the 470uf,...
Forum: Receive Antennas (below 30MHz) 12-03-2018, 7:55 PM
Replies: 19
Views: 649
Posted By hertzian
Will do. Sure enough, amplified loops where...

Will do.

Sure enough, amplified loops where one is chasing s/n, and not trying to bang the s-meter, larger is not always better. His loop sizes seem very reasonable.

I'm thinking of the...
Forum: Receive Antennas (below 30MHz) 12-03-2018, 4:19 PM
Replies: 19
Views: 649
Posted By hertzian
Thanks for measuring! Got some great feedback...

Thanks for measuring! Got some great feedback immediately from LVP:

The portable that runs off the AA pack draws about 80ma. The standard version uses 130ma. That works for me!

I might have...
Forum: Receive Antennas (below 30MHz) 12-03-2018, 5:11 AM
Replies: 19
Views: 649
Posted By hertzian
Thanks prcguy! Is the notch filter applied...

Thanks prcguy!

Is the notch filter applied before the lvp preamp (attaching loop to the filter first), or does it follow the preamp?

And, how much current does the amp draw in your setup? As a...
Forum: Receive Antennas (below 30MHz) 12-03-2018, 5:01 AM
Replies: 146
Views: 13,375
Posted By hertzian
Yep - see that single trace? Scratch through it...

Yep - see that single trace? Scratch through it for physical *galvanic* isolation from the braid.

And if you look closer, you'll see two through-hole pads (might be on front side), where one...
Forum: Amateur Radio General Discussion 12-03-2018, 4:43 AM
Replies: 44
Views: 1,685
Posted By hertzian
Started off with a Heathkit SW-717 receiver as an...

Started off with a Heathkit SW-717 receiver as an out of the blue holiday gift from my Stepmother:

https://people.ohio.edu/postr/bapix/SW-717.htm

Those green headphones were a real pain to use....
Forum: HF/MW/LW Equipment 12-02-2018, 5:22 AM
Replies: 19
Views: 6,152
Posted By hertzian
Heh, the last pin-thin section on my Tecsun 880...

Heh, the last pin-thin section on my Tecsun 880 is the same way! That's how I learned to be really careful. :)

Not a huge issue I suppose, but I think the slightly smaller whip was the way to go....
Forum: HF/MW/LW Equipment 12-01-2018, 2:22 AM
Replies: 19
Views: 6,152
Posted By hertzian
SSB whip new and improved!

I say this in jest - the improvement will be in the eye of the beholder. :)

The original Skywave measures about 20 inches from mounting screw to tip, whereas the Skywave SSB measure 22.5 inches...
Forum: HF/MW/LW Equipment 12-01-2018, 1:49 AM
Replies: 19
Views: 6,152
Posted By hertzian
Most definitely each pair must be tested - even...

Most definitely each pair must be tested - even those within the same family. Check out a long-winded thread here about my testing of some:
...
Forum: Receive Antennas (below 30MHz) 11-29-2018, 3:36 PM
Replies: 17
Views: 742
Posted By hertzian
That's great news that there are more filtering...

That's great news that there are more filtering options available!

Just a reminder that one doesn't have to have a totally dead problem band to fix an issue. The precaution is not to get totally...
Forum: Splitters, Filters and Multicouplers 11-29-2018, 3:13 PM
Replies: 7
Views: 543
Posted By hertzian
Insertion loss and a bit of attenuation inside...

Insertion loss and a bit of attenuation inside the band you are having problems with (within reason), can be ok if it restores proper operation of the receiver itself that is actually being desensed....
Showing results 1 to 25 of 250

 

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