Hr2510 owners manual

Add this listing to your favorites. Downloading, viewing, or using any information provided on these pages automatically accepts the user to the terms of this agreement! Modifications are provided for information purposes only! Power off the radio. Page Program Mode Step 2. Lock button out. This manual is also suitable for: Hr Lincoln. Print page 1 Print document 25 pages. Rename the bookmark. Delete bookmark? Cancel Delete. Delete from my manuals? Bohuzel dost trpi na koncovy hr — taky dost zere a topi.

Suite Santa Rosa, Ca. The AMC control will still function so using a hg meter you will be able to set it to avoid overmodulation. Remove the four screws from the bottom cover and remove the cover. To center the RIT: You will need to reorient the new transistor to work. Reassemble your radio and your ready to go. But it is fairly easy with a little soldering experience, and the right tools. Connect the cathode of the diode to pin 6 of IC, and the anode to the collector the center pin of Q These fixes rebias the switiching transistor to correct this.

A 3 dB increase in power is a doubling of power output. Shown below is a chart of the carrier oscillator frequencies for both rigs, with a LSB value extrapolated for the HTX As can be seen from the graph, the HTX filter is indeed significantly narrower than the filter. The next question becomes 'Can an HTX filter be transplanted into a for better performance? Be sure to give them the HTX catalog number, , as well.

This filter is not available directly from Uniden, I tried. The only downside to this mod will be that, since the frequency offsets for the display readout are controlled by fixed values in the CPU microcode, your frequency display will be off by 1 KHz in both USB and LSB modes. 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.

I did not concern myself with fixing LSB, since If you operate quite a bit of AM, you will notice that AM signals do sound more muffled with the narrower filter. This is normal, and can be compensated for somewhat by off-tuning the signal a little with the RIT or the main dial. If you operate a lot of AM, however, this mod may not be for you.

I always thought the RX audio on the sounded a little wimpy, even with an external speaker. Rogerbird has a good mod on his web site to increase the overall gain of the audio stages, but I didn't think this was my problem.

A sweep test of the audio chain from the collector of Q to the speaker showed an overall response of about Hz to Hz.

OK on the high end, but a little restricted on the low end. I paralleled C and C each with a high-quality computer grade. Return to Top. There are lots of good descriptions of mods floating around to enable the RIT to function on transmit, so I won't re-invent the wheel here.

Rogerbird has several listed on his page. The only thing that I can add is that I placed a short across diode D when I did my mod. It isn't needed any more once the RIT is enabled for transmit, and may introduce some non linearity on the low end.

These adjustments control the frequency of your carrier oscillators, and will knock your audio out of whack if not adjusted to spec. Use the instructions in Mod 3 or Mod 4, they are correct. I always wondered why, when we have a radio that tunes in Hz increments on the main dial, everyone seems fascinated with having KHz of 'slide' on the RIT control.

Seems kind of silly.