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VHF MSR Channel Elements
I know this is a long shot, but does anyone have a pair of channel elements crystalled for 147.180 TX, 147.780 RX for the MSR-2000 they'd like to sell? I thought I'd check here before I order a set
By terry dalpoas · #214832 ·
Re: Astron RM-50M conversion
A Victron Smart with a Victron SmartShunt right at the battery (such that the shunt only sees battery current and not load current) is a reasonable approach if you have lead-acid (flooded or AGM). See
By Matthew Kaufman · #214831 ·
Re: Andrew DB201 Antenna
A DB 201 or 212 is the best on lowband...there are a lot left abandoned at sites in still good shape. You can probably find one looking around...cheaper than a new one but it WILL work Chris
By Chris Boone WB5ITT · #214830 ·
Re: Andrew DB201 Antenna
Kreco , stupid auto correct. Ken Pearce N4KCD Commerce Township, MI
By Ken Pearce · #214829 ·
Re: Andrew DB201 Antenna
Oreo is good and I use either Tessco or Talley. Ken Pearce N4KCD Commerce Township, MI
By Ken Pearce · #214828 ·
Re: Andrew DB201 Antenna
I believe Sinclair and Comprod still make their versions. Chuck WB2EDV
By Chuck Kelsey · #214827 ·
Re: Andrew DB201 Antenna
Kreco makes both folded monopole ground plane and coaxial dipoles for VHF lo band. For something a little less expensive Child¡¯s Antenna Company makes a VHF lo coaxial dipole.
By Mike · #214826 ·
Re: Astron RM-50M conversion
Since I'm not stuck on the Iota, a Victron Smart IP22, IP43, IP67 12/30 or 12/50 - are spec'd to 14.7v max. Quick review of battery products... LiTime - max V = 14.6 BattleBorn = 14.7 WattCycle =
By Jim Aspinwall · #214825 ·
Andrew DB201 Antenna
I've been tasked by our Red Cross regional director to get a 47 MHz antenna installed for "low band" VHF use on one of their buildings.? It seems to be a difficult band to find commercial antennas
By Marlo Montanaro - KA2IRQ · #214824 ·
Re: Motorola SLR5700 DMR Repeater
Hey Bob, don¡¯t worry I¡¯ve had my turn in the bucket. This list has some extremely knowledgeable guys on here and I know you, your background and your technical background, they don¡¯t. I
By Hudson, John@CalOES · #214823 ·
Re: THREAT TO 222-225MHz Spectrum Getting Worse with additional licenses issued outside of California
On Sat, Apr 26, 2025 at 04:56 PM, Chuck Kelsey wrote: > > NOTHING is safe if "big money" wants it... NOTHING. > > Chuck > > > > On 4/26/2025 4:25 PM, John N. Hudson III via groups.io wrote: >
By Mike Sullivan · #214822 ·
Re: THREAT TO 222-225MHz Spectrum Getting Worse with additional licenses issued outside of California
NOTHING is safe if "big money" wants it... NOTHING. Chuck
By Chuck Kelsey · #214821 ·
Re: THREAT TO 222-225MHz Spectrum Getting Worse with additional licenses issued outside of California
Bob we have discussed this and you have a valid point. But as you know the spectrum is crowded in SoCal with only a few High Level channels, Trustees are limited to 3 pairs but they can co-channel
By John N. Hudson III · #214820 ·
Re: Motorola SLR5700 DMR Repeater
Hi Guys I am Sorry my reply to the original question should have been: Check your repeater settings, so it does not beacon, WOW I got it !! Sorry I missed the post from another SL5700 user
By bob ehrhorn · #214819 ·
Re: PD526 Duplexer Tuning
Ignore the first two images close to the top. They are earlier plots.
By Part 15 Engineer · #214818 ·
Re: Help with out of range programming a Motorola GP300
Hello Ron, A couple things here. The "1" in the last of the model number is 433 MHz not 443 MHz. I believe that with the shift method, or hex edit, will only let you go down in frequency, not
By Teton Amateur Radio Repeater Association (TARRA) · #214817 ·
Help with out of range programming a Motorola GP300
I was recently given a pair of GP300 HTs and am trying to get them reprogrammed for some new hams in the area. I have the programmer and RSS and can download the codeplug.? But, these are 398-443
By Ron · #214816 ·
Re: PD526 Duplexer Tuning
A number of things: 1. You¡¯re sweeping 30 MHz wide with only 401 points. You need to either narrow down your sweep just to the range of interest, use more points, or more likely a combination of
By Jeff DePolo WN3A · #214815 ·
Re: PD526 Duplexer Tuning
Your picture tells a lot. My guess is that the cans on the same side of the duplexer are over coupled because of improper coax length between the cans. In other words, with the proper 1/4 wavelength
By John · #214814 ·
Re: PD526 Duplexer Tuning
Here is the plot for a single cavity. [email protected]> wrote:
By Part 15 Engineer · #214813 ·