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Forum Replies Created

RE: Hedghog PSC programmable standards converter

@irob2345 Thank you. I started to learn VHDL when I was building the first Hedghog. I was lucky as I got some great lessons from Jeffrey Borinsky on the Golborne forum. I had done some microcontroller...

In forum Standards Converters & System Modulators

3 months ago
RE: Hedghog PSC programmable standards converter

Thanks NickAnyone that has built a Hedghog should have no problem building any of the others.Soldering the FPGA may look daunting but it is really no more difficult that the TVP5150 decoder. In fact I...

In forum Standards Converters & System Modulators

3 months ago
RE: Hedghog PSC programmable standards converter

Thanks john Frank

In forum Standards Converters & System Modulators

3 months ago
RE: Hedghog PSC programmable standards converter

Thanks Lloyd When on 30 or 60 Hz field, moving content can have a little jitter. This is because the conversion from 50 Hz to 30/60 Hz is done in a simple way. But it is none worse than you can find s...

In forum Standards Converters & System Modulators

3 months ago
RE: Hedghog PSC programmable standards converter

Thanks Chris Fair play to Stephen@freya for building them. He has the skills to do that which I have not.I would struggle to get one built in a long day. Thanks for putting the link to Stephen in my ...

In forum Standards Converters & System Modulators

3 months ago
Hedghog PSC programmable standards converter

This is my latest standards converter. It is programmable so can generate a range of standards from a 625 line input. It also comes with a programmable modulator.The converter can generate a standard ...

In forum Standards Converters & System Modulators

3 months ago
RE: Metcal SP200 : SP-PW1-20

Hi ChrisLike you I have a Weller TCP iron and find it very good. I heard a lot of good reports about the Metcal but to be honest I was sceptical. I couldn't see how it could be much better than the TC...

In forum In The Workshop

4 months ago
RE: Converting 405 lines to 625 lines using a Hedghog II

Thanks Guys

In forum Standards Converters & System Modulators

1 year ago
Converting 405 lines to 625 lines using a Hedghog II

I like to make it clear from the outset that this thread relates only to the Hedghog II. The original Hedghog has not got the hardware to do 405 to 625. In August 2019 Jeffrey Borinsky successfully bu...

In forum Standards Converters & System Modulators

1 year ago
RE: System A Modulator: Options Today

Thanks Frank If anyone would is interested in one but don't want to build it, forum member Freya is going to offer completed ones. Frank

In forum Standards Converters & System Modulators

1 year ago
RE: System A Modulator: Options Today

A bit late to this thread but if anyone is interested I have built a couple versions of David Robinson's modulator. They have a inbuilt 405 line test card and test tone.All files required to build the...

In forum Standards Converters & System Modulators

1 year ago
RE: Group Project: Building the Hedghog 405 standards converter

Hi mfd70It has come along well. The larger case will keep it nice and cool. If the test patterns are clean one possibility for the patterning could be pick up from the audio/video leads to the sockets...

In forum Standards Converters & System Modulators

2 years ago
RE: Group Project: Building the Hedghog 405 standards converter

Hi mfd70 Well done! great result. ? With regard to the cases there is another case that I believe does suit it is aHammond RM2015SAvailable from Mouser and Rapid and probably more suppliers as well.I...

In forum Standards Converters & System Modulators

2 years ago
Hedghog II

Hedghog II is mainly in response to the recent trouble with the EP2C5 FPGA boards. Hedghog II for the most part it is the Same as Hedghog but with a few changes.The biggest difference is the FPGA boar...

In forum Standards Converters & System Modulators

2 years ago
RE: Ekco TMB272 Mains-Battery TV

Great result Till, that tube must have got little use. Frank

In forum Black & White Television

2 years ago
RE: Ekco TMB272 Mains-Battery TV

Hi Till That's coming along nicely. Frank

In forum Black & White Television

2 years ago
RE: Bush TV22

If you click on "this" it will take you to a thread on UKVRRR. Frank Edit: crossed with Sideband.

In forum Black & White Television

2 years ago
RE: Bush TV22

In this thread post #46 there are some photos of a diode split winding. Which consists of two windings with a diode between them. The original rectifier is still used. The former is made from acrylic ...

In forum Black & White Television

2 years ago
RE: Bush TV22

I would try using the old EHT winding if it is at all serviceable as winding the EHT winding will not be easy. The original EHT winding will have been wave wound. If you don't wave wind, it's self cap...

In forum Black & White Television

2 years ago
RE: Bush TV22

I would just remove the rust from the lamination's and try them . I would expect they should be OK or at least good enough to test the rewound transformer. Frank

In forum Black & White Television

2 years ago
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