View and Download President HR owner’s manual online. 10 Meter Amateur Transceiver. HR Transceiver pdf manual download. Also for: Hr View and Download PRESIDENT HR user manual online. 10 Meter Amateur Mobile Transceiver. HR Transceiver pdf manual download. PRESIDENT LINCOLN (HR ) MODS by Roger Perales ~ perales Conversion of this text from html format to PDF by Frank Tomeš.
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The Chipswitch replacement CPU will not compensate for this either, and the people at Chipswitch haven’t shown any interest in releasing a new version to allow for this mod. This is a very versatile update.
Since I never liked the ugly amber color that Uniden chose for the backlight, I topped it off by making a red filter to fit behind the LCD unit from a red Rolodex plastic card protector itemavailable in a pack of 5 colors from your friendly office supply store. If you get an external amplifier, just make sure you get one that is actually linear; many of the cheaper so-called ‘linear amplifiers’ operate in a class-C mode with no bias, and splatter the band horribly when used for SSB or AM.
Connect the Orange wire, cut from J, to the Grey wire Brown in the Lincoln on the back of the rotary switch. The changes to the Mic are required because of these differences in the control operation.
PRESIDENT HR Service manual |
These fixes rebias the switiching transistor to correct this. To get more, Q is the Mic Attenuator, This limits the audio. Manul the four screws on the sides of the radio that hold the PLL tray in the radio.
Yes, I want to translate this pages into Czech. But it is fairly easy with a little soldering experience, and the right tools.
Connect the oscilloscope to TP1. Chipswitch can be ordered by Phone directly from the manufacurer, there address is: My philosophy is that unless you have been to engineering school and have access to CAD equipment and network analyzers, don’t dink with the RF strip.
Reassemble your radio and your ready to go. It just so happened that I lived two blocks from a grain elevator at the time, and the truckers waiting to offload their grain liked to sit on CB and yak. With the Mode switch to AM, Frequency at Refer to the Diagram below and create the circuit shown.
PRESIDENT HR2510 User Manual
The right coil labeled L, adjusts CW. If you operate quite a bit of AM, you will notice that AM signals do sound more muffled with the narrower filter. This modification is not needed if you have Chipswitched your radio already.
Connect the anode of the diode to one side of the resistor.
All you need to do is to replace the existing IF Amp transistor with a new one which has greater frequency response and lower noise characteristics. It jr2510 worthwhile, but I’m not sure what the point of removing D is; this diode provides AGC control to the front end, and would seem to leave the radio more susceptible to front end overload if removed.
HR 2510 Manual
Bohuzel dost trpi na koncovy stupen – taky dost zere a topi. L Connect the oscilloscpe to TP Remove diode D and Transistor Q Seek-This causes the radio to seek for active channels.
It’s just personal preference on my part, but that tiny knob doesn’t make a real great VFO. It does require the ability to remove the Microprocessor and solder in a new one. I am looking forward your reply.
HR Manual | Copper Electronics
When the UP button is pressed it grounds pin 13, causing the pulse train on pin 12 to be outputed to pin 11 through the isolation resistor to the white wire on J, this will increment the frequency of the selected digit on the HR, about 1 digit per pulse as long as the button is held down.
Suite Santa Rosa, Ca. This will give complete coverage from I bought mine from the friendly folks at Bill’s 2-way. To change the duration length of the beep, replace C 10uf 16v remove and replace with a capacitor at least 50v with more or less capacitance to lengthen or shorten the beep to your preference.
But how can this be? To modify this, remove Q and bend the Emmitter leg up from the circuit board and re install. If you operate a lot of AM, however, this mod may not be for you.
This is where I get to express my opinion of some of the other mods floating around out there. You must use a 1N diode, because a 1N will not handle the current on TX.