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Been away from the forums for a long while, but I have exhausted pretty much every other source of information, I have recently purchased I Anritsu Spectrum analyzer knowing that it had display issues but considered it worth at least a look at the price. What I didn't know is that there is no...

I have just finished building a few bits of homebrew test and measurement tools, my question is, does anyone have any recommendations of any software/freeware packages that would enable me to design front panels to give my projects a finishing touch. I have access to a colour laser and colour...

Is there anyone out there with a circuit diagram for this old classic amp, just got it as part of a job lot and I am wanting to restore it, but it appears that someone has been tinkering inside it. any help really appreciated. Google not really helped with this one. Karl

Just got hold of one of these old classics, badged FDK, needs a bit of TLC, any one out there with a service manual/schematic for it, I have posted on several forums and so far only managed to get a user manual but without the circuit diagram, many thanks in advance, Karl

After many hours fault finding, it is time accept the fact that my board is dead, is there anyone out with a spare board, coded PB121, any condition considered as I can transplant any suspect parts from my origional unit, maby thanks, Karl, M0KRL.

I would be very interested in other peoples experience with the design, unfortunatly at my QTH I have tight restricions as far as space is concerned, so much so that the short leg of my windom is connected to a neighbours chimney stack (very good neighbours), so a multiband antenna is my only HF...

I have added the extra section to my antenna, initial impressions are a little dissapointing, I was expecting big things, firstly on 40 mtr, the swr seems to have increased just a little, on 20mtr the swr has come down quite a lot which was unexpeted, no change at all on 10mtr. Now the big...

The short leg is listed as 6.76mtr, the long leg is 13.52mtr, with a standard 4:1 current balun, fairly standard layout for a 40, 20, and 10mtr OCF, the third wire is 3.68mtr, strung from the balun as a parallel along the long leg, no information about the spacing distance, but i have some 120mm...

I dont have a picture, but it is quites simple in design, it seems to be a parralel wire from the balun seperated from the longer wire with a few insulators of about 100-150mm length, just like a very wide ladder line at 3.68mtr length, it looks a interesting adaptation, as long as it does not...

At VHF and up, your $10 is going to be better spent on increasing the height of the antenna instalation, or changing to better feeders and connectors, more dramatic results in TX and RX signals can be realised by reducing transmission line losses, rather than minimal increases in outright...

A couple of years ago I put up a half size Windom, about 21mtr length, homemade 4:1 balun and direct coax feed, happy with the compromise results, no tuner needed on 40, 20, 10 meters, with SWR below 2:1 on all bands. But now I have found a slightly different design, which adds a second wire...

Well as much as I hate to admit defeat, the radio is now on the pending shelf. I have spent many hours on the web, and found lots of information out there, but nothing that relates to this processor board. Without a circuit diagram and alignment data. there is not much else can be done with it...

The missing xtal is a 2mhz resonator which is mounted on the underside of the pcb, as for the the 6.2mhz, as you said, not able to find, I am determined to find more info on the processor board, but many hours of searching have returned nothing, I have seen a few radios for sale on Ebay, and...

There seems to be many variations on a common theme, I am thinking this may now be a longer term proposition than origionaly anticipated, serves me right for expecting a quick fix, there must be someone out there with the alignment data that corresponds to this radio, I will keep looking and...

Uniden HR 2510

HR 2600 full manual

Uniden 2830 Photos as promised, Hope they can help... [/ATTACH]

No problem Jeff, I will back in the workshop later this evening, but my initial observations are that the key differences are in the way the RIT links to the 10.240 reference crystal, the crystal links directly to the PLL chip, and the RIT voltage is applied to one side of the crystal, via a...

Hi there, I know this is a old thread, but I have come across the same problem with a Uniden 2830 that I has just bought as a spares or repair unit, did anyone find any alignment data for the Uniden with the PB-121AA PLL/Processor board, or even better a service manual, even Uniden are unable to...